Finding the Fourth Proportional to 87,310.56, 130,142.76 and 82,878.24

Step by Step Solution

1. Step 1: Write the proportion equation
   87,310.56 : 130,142.76 = 82,878.24 : x
2. Step 2: Convert to fraction form
   87,310.56/130,142.76 = 82,878.24/x
3. Step 3: Cross multiply
   87,310.56x = 130,142.76 × 82,878.24
4. Step 4: Simplify right side
   87,310.56x = 10,786,002,897.54
5. Step 5: Solve for x
   x = 10,786,002,897.54/87,310.56
6. Step 6: Final answer
   x = 123,536.06