Finding the Fourth Proportional to 87,013.32, 130,419.54 and 39,557.34

Step by Step Solution

1. Step 1: Write the proportion equation
   87,013.32 : 130,419.54 = 39,557.34 : x
2. Step 2: Convert to fraction form
   87,013.32/130,419.54 = 39,557.34/x
3. Step 3: Cross multiply
   87,013.32x = 130,419.54 × 39,557.34
4. Step 4: Simplify right side
   87,013.32x = 5,159,050,086.42
5. Step 5: Solve for x
   x = 5,159,050,086.42/87,013.32
6. Step 6: Final answer
   x = 59,290.35