Answer:
57, 13, 13, 13
Explanation:
Consider the multiples of 19, that is 19, 38, 57, 76
Subtract each in turn to find if remaining number is divisible by 3
96 - 19 =77 ← not divisible by 3
96 - 38 = 58 ← not divisible by 3
96 - 57 = 39 ← divisible by 3
39 ÷ 3 = 13
Thus the positive whole numbers are
57, 13, 13, 13