Finding the Fourth Proportional to 576,456.72, 865,997.25 and 417,024.42

Step by Step Solution

1. Step 1: Write the proportion equation
   576,456.72 : 865,997.25 = 417,024.42 : x
2. Step 2: Convert to fraction form
   576,456.72/865,997.25 = 417,024.42/x
3. Step 3: Cross multiply
   576,456.72x = 865,997.25 × 417,024.42
4. Step 4: Simplify right side
   576,456.72x = 361,142,000,902.85
5. Step 5: Solve for x
   x = 361,142,000,902.85/576,456.72
6. Step 6: Final answer
   x = 626,485.89