Finding the Fourth Proportional to 424,443.29, 585,558.90 and 240,643.15

Step by Step Solution

1. Step 1: Write the proportion equation
   424,443.29 : 585,558.90 = 240,643.15 : x
2. Step 2: Convert to fraction form
   424,443.29/585,558.90 = 240,643.15/x
3. Step 3: Cross multiply
   424,443.29x = 585,558.90 × 240,643.15
4. Step 4: Simplify right side
   424,443.29x = 140,910,739,359.60
5. Step 5: Solve for x
   x = 140,910,739,359.60/424,443.29
6. Step 6: Final answer
   x = 331,989.56