Finding the Fourth Proportional to 82,420.55, 113,691.62 and 52,612.55

Step by Step Solution

1. Step 1: Write the proportion equation
   82,420.55 : 113,691.62 = 52,612.55 : x
2. Step 2: Convert to fraction form
   82,420.55/113,691.62 = 52,612.55/x
3. Step 3: Cross multiply
   82,420.55x = 113,691.62 × 52,612.55
4. Step 4: Simplify right side
   82,420.55x = 5,981,605,210.31
5. Step 5: Solve for x
   x = 5,981,605,210.31/82,420.55
6. Step 6: Final answer
   x = 72,574.20