Finding the Fourth Proportional to 87,085.98, 130,502.88 and 60,040.56

Step by Step Solution

1. Step 1: Write the proportion equation
   87,085.98 : 130,502.88 = 60,040.56 : x
2. Step 2: Convert to fraction form
   87,085.98/130,502.88 = 60,040.56/x
3. Step 3: Cross multiply
   87,085.98x = 130,502.88 × 60,040.56
4. Step 4: Simplify right side
   87,085.98x = 7,835,465,996.81
5. Step 5: Solve for x
   x = 7,835,465,996.81/87,085.98
6. Step 6: Final answer
   x = 89,973.91