Finding the Fourth Proportional to 623,906.15, 860,990.72 and 337,426.29

Step by Step Solution

1. Step 1: Write the proportion equation
   623,906.15 : 860,990.72 = 337,426.29 : x
2. Step 2: Convert to fraction form
   623,906.15/860,990.72 = 337,426.29/x
3. Step 3: Cross multiply
   623,906.15x = 860,990.72 × 337,426.29
4. Step 4: Simplify right side
   623,906.15x = 290,520,902,686.90
5. Step 5: Solve for x
   x = 290,520,902,686.90/623,906.15
6. Step 6: Final answer
   x = 465,648.41