How is the inheritance divided for two full sisters only if their brother dies, and he was not married or had children, and their father had died before him?

The questioner did not specify the nature of the sisters' kinship (full-sisters, half-sisters through father, half-sisters through mother, or a mix) nor the father's kinship to the deceased. Limiting the heirs is a prerequisite for dividing the inheritance. The questioner can use the inheritance page on the website. If the two sisters are full-sisters or half-sisters through the father, and they inherited two-thirds, then the remainder goes to the questioning brother if he is a full-nephew (son of a full-brother) or a half-nephew through the father (son of a half-brother through father). If they are half-sisters through the mother, their share is one-third, and the remainder goes to the questioner if he is a full-nephew or a half-nephew through the father. However, if the questioner is a half-nephew through the mother (son of a half-brother through mother), then all the money goes to the two sisters, as their prescribed share and by way of return.