Finding the Fourth Proportional to 610,665.57, 842,732.00 and 338,724.61

Step by Step Solution

1. Step 1: Write the proportion equation
   610,665.57 : 842,732.00 = 338,724.61 : x
2. Step 2: Convert to fraction form
   610,665.57/842,732.00 = 338,724.61/x
3. Step 3: Cross multiply
   610,665.57x = 842,732.00 × 338,724.61
4. Step 4: Simplify right side
   610,665.57x = 285,454,062,127.24
5. Step 5: Solve for x
   x = 285,454,062,127.24/610,665.57
6. Step 6: Final answer
   x = 467,447.45