Finding the Fourth Proportional to 613,139.20, 925,468.15 and 613,139.20

Step by Step Solution

1. Step 1: Write the proportion equation
   613,139.20 : 925,468.15 = 613,139.20 : x
2. Step 2: Convert to fraction form
   613,139.20/925,468.15 = 613,139.20/x
3. Step 3: Cross multiply
   613,139.20x = 925,468.15 × 613,139.20
4. Step 4: Simplify right side
   613,139.20x = 567,440,801,116.48
5. Step 5: Solve for x
   x = 567,440,801,116.48/613,139.20
6. Step 6: Final answer
   x = 925,468.15