Finding the Fourth Proportional to 87,196.60, 130,695.42 and 39,705.88

Step by Step Solution

1. Step 1: Write the proportion equation
   87,196.60 : 130,695.42 = 39,705.88 : x
2. Step 2: Convert to fraction form
   87,196.60/130,695.42 = 39,705.88/x
3. Step 3: Cross multiply
   87,196.60x = 130,695.42 × 39,705.88
4. Step 4: Simplify right side
   87,196.60x = 5,189,376,663.07
5. Step 5: Solve for x
   x = 5,189,376,663.07/87,196.60
6. Step 6: Final answer
   x = 59,513.52