Finding the Fourth Proportional to 624,103.89, 861,260.40 and 337,621.47

Step by Step Solution

1. Step 1: Write the proportion equation
   624,103.89 : 861,260.40 = 337,621.47 : x
2. Step 2: Convert to fraction form
   624,103.89/861,260.40 = 337,621.47/x
3. Step 3: Cross multiply
   624,103.89x = 861,260.40 × 337,621.47
4. Step 4: Simplify right side
   624,103.89x = 290,780,002,300.79
5. Step 5: Solve for x
   x = 290,780,002,300.79/624,103.89
6. Step 6: Final answer
   x = 465,916.02