Finding the Fourth Proportional to 585,061.20, 876,279.60 and 585,061.20

Step by Step Solution

1. Step 1: Write the proportion equation
   585,061.20 : 876,279.60 = 585,061.20 : x
2. Step 2: Convert to fraction form
   585,061.20/876,279.60 = 585,061.20/x
3. Step 3: Cross multiply
   585,061.20x = 876,279.60 × 585,061.20
4. Step 4: Simplify right side
   585,061.20x = 512,677,194,311.52
5. Step 5: Solve for x
   x = 512,677,194,311.52/585,061.20
6. Step 6: Final answer
   x = 876,279.60