How is an inheritance divided among: a son, three daughters, and a maternal half-brother?

The inheritance is to be divided among the son and daughters by way of ta’sib (residuary heirship), with the male receiving the share of two females. The brother from the mother's side receives nothing due to the presence of a lineal descendant (heir). In this case, the inheritance is divided into five shares: two shares for the son, and one share for each daughter. We must emphasize that matters of inheritance are complex and intricate, and should be referred to the Sharia courts for investigation.