Short answer. Yes. Article 1017 provides that in the case of money or fungible goods, if each heir's share is not earmarked, there is a right of accretion — so if one heir cannot inherit, the others named to share that unearmarked cash or fungible property take the vacant share instead.
What the law says
In case of money or fungible goods, if the share of each heir is not earmarked, there shall be a right of accretion.
Civil Code, Article 1017 — 'In Equal Shares' Still Allows Accretion. Read the full provision →
What the law says
The words "one-half for each" or "in equal shares" or any others which, though designating an aliquot part, do not identify it by such description as shall make each heir the exclusive owner of determinate property, shall not exclude the right of accretion.
Civil Code, Article 1017 — 'In Equal Shares' Still Allows Accretion. Read the full provision →
Phrases like "in equal shares" do not defeat accretion
Article 1017 opens by clearing away a common misunderstanding: the words "one-half for each" or "in equal shares" or any others which, though designating an aliquot part, do not identify it by such description as shall make each heir the exclusive owner of determinate property, shall not exclude the right of accretion. Simply stating a fraction or percentage for each heir, without pinning down which specific property makes up that portion, does not by itself rule out accretion.
Money and fungible goods get the rule stated directly
The article then applies that principle specifically to cash and similar property: in case of money or fungible goods, if the share of each heir is not earmarked, there shall be a right of accretion. Cash left to several heirs without dividing it into specifically identified sums for each of them falls exactly within this rule, regardless of whether the will described their shares as equal or in some other proportion.
What "earmarked" means in this context
Earmarking means identifying a heir's portion with enough specificity that it becomes that heir's own determinate property — for example, naming particular bills, a specific bank account, or a segregated set of items as belonging exclusively to one heir. Simply naming several heirs to share a lump sum or a stock of fungible goods, without that kind of specific identification, leaves the shares unearmarked, which is exactly the situation this article addresses.
Applying this to your father's will
Because the cash or fungible property in your father's will was left to several heirs without specifying which portion belongs to whom, it falls into the category Article 1017 covers. If one of those heirs cannot inherit, the vacant share does not simply disappear or fall outside the group — the right of accretion lets the remaining heirs named to that unearmarked share take it up between them.