Finding the Fourth Proportional to 408,061.15, 571,876.10 and 408,061.15

Step by Step Solution

1. Step 1: Write the proportion equation
   408,061.15 : 571,876.10 = 408,061.15 : x
2. Step 2: Convert to fraction form
   408,061.15/571,876.10 = 408,061.15/x
3. Step 3: Cross multiply
   408,061.15x = 571,876.10 × 408,061.15
4. Step 4: Simplify right side
   408,061.15x = 233,360,419,023.52
5. Step 5: Solve for x
   x = 233,360,419,023.52/408,061.15
6. Step 6: Final answer
   x = 571,876.10