Finding the Fourth Proportional to 103,710.58, 155,688.89 and 87,275.27

Step by Step Solution

1. Step 1: Write the proportion equation
   103,710.58 : 155,688.89 = 87,275.27 : x
2. Step 2: Convert to fraction form
   103,710.58/155,688.89 = 87,275.27/x
3. Step 3: Cross multiply
   103,710.58x = 155,688.89 × 87,275.27
4. Step 4: Simplify right side
   103,710.58x = 13,587,789,863.60
5. Step 5: Solve for x
   x = 13,587,789,863.60/103,710.58
6. Step 6: Final answer
   x = 131,016.43