Share of my mother in her father agricultural property after his death

the agricultural land is situated in Maharashtra. basically I want to know the share of my mother in her father's agricultural land. he died in the year 1994 and he had 1 son ( demise in 2004 and have 2 son and a daughter) and 3 daughters ( including my mother and all three are alive). my mother got married in the year 1967. so what will be the share of my mother in this land. and what will be the benefit for me regarding the same when I am having 2 brothers. thank you