Finding the Fourth Proportional to 642,688.43, 964,116.47 and 237,825.52

Step by Step Solution

1. Step 1: Write the proportion equation
   642,688.43 : 964,116.47 = 237,825.52 : x
2. Step 2: Convert to fraction form
   642,688.43/964,116.47 = 237,825.52/x
3. Step 3: Cross multiply
   642,688.43x = 964,116.47 × 237,825.52
4. Step 4: Simplify right side
   642,688.43x = 229,291,499,002.59
5. Step 5: Solve for x
   x = 229,291,499,002.59/642,688.43
6. Step 6: Final answer
   x = 356,769.30