Ancestor Property-My gradfather has purchased a land , the cots of land and contruction is paid join?

My gradfather has purchased a land , the cots of land and contruction is paid jointly by my grandfather and my father . My grandfather had 3 sons. The property stnads in my Grand father name . My grandfather expire in 1974 . The property still stands in my grandfather name . My grandmother also expire in 1999 . My father and one of my uncle also died .
Pls advice how same is distributed amoung remaining memebers.