Finding the Fourth Proportional to 87,015.57, 130,581.68 and 55,872.69

Step by Step Solution

1. Step 1: Write the proportion equation
   87,015.57 : 130,581.68 = 55,872.69 : x
2. Step 2: Convert to fraction form
   87,015.57/130,581.68 = 55,872.69/x
3. Step 3: Cross multiply
   87,015.57x = 130,581.68 × 55,872.69
4. Step 4: Simplify right side
   87,015.57x = 7,295,949,446.96
5. Step 5: Solve for x
   x = 7,295,949,446.96/87,015.57
6. Step 6: Final answer
   x = 83,846.48