Finding the Fourth Proportional to 271,019.96, 406,668.72 and 129,025.88

Step by Step Solution

1. Step 1: Write the proportion equation
   271,019.96 : 406,668.72 = 129,025.88 : x
2. Step 2: Convert to fraction form
   271,019.96/406,668.72 = 129,025.88/x
3. Step 3: Cross multiply
   271,019.96x = 406,668.72 × 129,025.88
4. Step 4: Simplify right side
   271,019.96x = 52,470,789,466.47
5. Step 5: Solve for x
   x = 52,470,789,466.47/271,019.96
6. Step 6: Final answer
   x = 193,604.89