Finding the Fourth Proportional to 123,553.89, 185,264.22 and 66,658.29

Step by Step Solution

1. Step 1: Write the proportion equation
   123,553.89 : 185,264.22 = 66,658.29 : x
2. Step 2: Convert to fraction form
   123,553.89/185,264.22 = 66,658.29/x
3. Step 3: Cross multiply
   123,553.89x = 185,264.22 × 66,658.29
4. Step 4: Simplify right side
   123,553.89x = 12,349,396,103.38
5. Step 5: Solve for x
   x = 12,349,396,103.38/123,553.89
6. Step 6: Final answer
   x = 99,951.50