Finding the Fourth Proportional to 271,017.96, 406,665.72 and 129,023.88

Step by Step Solution

1. Step 1: Write the proportion equation
   271,017.96 : 406,665.72 = 129,023.88 : x
2. Step 2: Convert to fraction form
   271,017.96/406,665.72 = 129,023.88/x
3. Step 3: Cross multiply
   271,017.96x = 406,665.72 × 129,023.88
4. Step 4: Simplify right side
   271,017.96x = 52,469,589,057.39
5. Step 5: Solve for x
   x = 52,469,589,057.39/271,017.96
6. Step 6: Final answer
   x = 193,601.89