The ratio of sons and mothers sharing the inheritance is 23: 13 = 2: 1.

The ratio of dividing the inheritance between mother and daughter is 23: 13 = 2: 1,

The inheritance ratio of sons, mothers and daughters is:

(2×2):( 1×2): 1=4:2: 1

The son can get:

168×4 1+2+4=96 (2);

A: A son can get 96 taels of gold.