Finding the Fourth Proportional to 408,061.10, 571,752.10 and 408,061.10

Step by Step Solution

1. Step 1: Write the proportion equation
   408,061.10 : 571,752.10 = 408,061.10 : x
2. Step 2: Convert to fraction form
   408,061.10/571,752.10 = 408,061.10/x
3. Step 3: Cross multiply
   408,061.10x = 571,752.10 × 408,061.10
4. Step 4: Simplify right side
   408,061.10x = 233,309,790,853.31
5. Step 5: Solve for x
   x = 233,309,790,853.31/408,061.10
6. Step 6: Final answer
   x = 571,752.10