Finding the Fourth Proportional to 82,251.30, 123,434.55 and 52,740.90

Step by Step Solution

1. Step 1: Write the proportion equation
   82,251.30 : 123,434.55 = 52,740.90 : x
2. Step 2: Convert to fraction form
   82,251.30/123,434.55 = 52,740.90/x
3. Step 3: Cross multiply
   82,251.30x = 123,434.55 × 52,740.90
4. Step 4: Simplify right side
   82,251.30x = 6,510,049,258.10
5. Step 5: Solve for x
   x = 6,510,049,258.10/82,251.30
6. Step 6: Final answer
   x = 79,148.28