In case of Hindu’s; Ancestral property; Property inherited upto 4 generations of male lineage i.e. Property inherited by a Hindu from his father, father’s father or father’s fathers’ father…..
Self acquired property can become ancestral property if it is thrown into the pool of ancestral properties and enjoyed in common.
Daughters have a (equal) right in property of Father/ancestors as per facts and details of the matter.
Married Daughters have a (equal) right in property of Father/ancestors as per facts and details of the matter.
From the narration by you in your query the Daughters are ought to have a (equal) right in property of Father.
X could dispose the self acquired property/share by a valid WILL in his life time, as per provisions of personal laws that applied in his case. You have posted that X has died.