the parents (father and mother) are not alive of brothers and sisters. THE PROPERTY IS IN NAME OF 1 BROTHER (not alive, not married so no heritage) as he used to work in bank and can avail bank loan at low rates. , As it was joint family surplus cash amount was contributed to best level in property by other brothers. My question is that what will be the share of brothers and sisters…? Our confusion is as Under : As all brothers contributed in property, brothers divide property into 4 parts, the 4 th share of mahroom brother to be divided in respect that brothers get 2 part and sister get 1 part OR it would be Division from full property in ratio that brothers get 2 part and sister get 1 part.. Would be thankful if you clear confusion. May Allah give you best rewards.

Walaikumussalam brother
Only the share of Marhoom will be divided to brother and sisters as per the sharia ruling brother will get twice of the sister.
Wassalam