Answer
(Fatwa: 941/L=352/TL=1432)
Daughters too have their rights in their ancestral property as sons have. It was the practice of Jahiliyah (pre-Islamic period of ignorant) that they used to deprive daughters from inheritance. The holy Quran annulled this wrong practice by declaring the rights of sons and daughters. Your brother should not deprive your four sisters of inheritance; otherwise, he shall be liable for punishment before Allah. It is mentioned in a hadith: “If anyone takes a span of land unjustly, his neck will be encircled with it down seven earths on the Day of Resurrection.” (Mishkah: p. 254)
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband