Finding the Fourth Proportional to 221,103.59, 305,123.96 and 125,615.52

Step by Step Solution

1. Step 1: Write the proportion equation
   221,103.59 : 305,123.96 = 125,615.52 : x
2. Step 2: Convert to fraction form
   221,103.59/305,123.96 = 125,615.52/x
3. Step 3: Cross multiply
   221,103.59x = 305,123.96 × 125,615.52
4. Step 4: Simplify right side
   221,103.59x = 38,328,304,899.86
5. Step 5: Solve for x
   x = 38,328,304,899.86/221,103.59
6. Step 6: Final answer
   x = 173,349.99