Consider the ratio as "parts of x."
\(3x+3x+5x=123\)
Let's find what one "part" is. (the value of x)
\(11x=123\)
\(x=\frac{123}{11}=11\frac{2}{11}\)
Multiply by 3, 3, and 5 to get our answer.
\(\boxed{33\frac{6}{11},\ 33\frac{6}{11},\ 55\frac{10}{11}}\)