Finding the Fourth Proportional to 271,016.46, 406,663.47 and 129,022.38

Step by Step Solution

1. Step 1: Write the proportion equation
   271,016.46 : 406,663.47 = 129,022.38 : x
2. Step 2: Convert to fraction form
   271,016.46/406,663.47 = 129,022.38/x
3. Step 3: Cross multiply
   271,016.46x = 406,663.47 × 129,022.38
4. Step 4: Simplify right side
   271,016.46x = 52,468,688,758.46
5. Step 5: Solve for x
   x = 52,468,688,758.46/271,016.46
6. Step 6: Final answer
   x = 193,599.64