family settlement

Good morning, my father died without any will. My father has a wife , eldest son, four daughters. Iam the 4th daughter. my father has a self acquired house of 80 sq.yards .My mother is staying with me. All the three sisters and mother willing to sell their share in the house to me with some monetary benefits as iam looking after my mother except my eldest brother. He neither looking after my mother nor willing to give me his share in the house. Still the house is in the name of my father. Please guide how to get the house registered on my name of all shares except my brother's. By leaving his share i.e leaving one room can i get the house registered on my name in sub registrar office without my brother's consent. he is not talking to any one of us.Whether I should apply for sale deed or otherwise any other way. Kindly suggest the best way. Thankyou