Finding the Fourth Proportional to 123.37, 185.33 and 75.31

Step by Step Solution

1. Step 1: Write the proportion equation
   123.37 : 185.33 = 75.31 : x
2. Step 2: Convert to fraction form
   123.37/185.33 = 75.31/x
3. Step 3: Cross multiply
   123.37x = 185.33 × 75.31
4. Step 4: Simplify right side
   123.37x = 13,956.36
5. Step 5: Solve for x
   x = 13,956.36/123.37
6. Step 6: Final answer
   x = 113.13