Finding the Fourth Proportional to 87,477.72, 131,105.76 and 55,875.64

Step by Step Solution

1. Step 1: Write the proportion equation
   87,477.72 : 131,105.76 = 55,875.64 : x
2. Step 2: Convert to fraction form
   87,477.72/131,105.76 = 55,875.64/x
3. Step 3: Cross multiply
   87,477.72x = 131,105.76 × 55,875.64
4. Step 4: Simplify right side
   87,477.72x = 7,325,618,247.69
5. Step 5: Solve for x
   x = 7,325,618,247.69/87,477.72
6. Step 6: Final answer
   x = 83,742.67