Finding the Fourth Proportional to 88,474.08, 132,710.76 and 72,858.72

Step by Step Solution

1. Step 1: Write the proportion equation
   88,474.08 : 132,710.76 = 72,858.72 : x
2. Step 2: Convert to fraction form
   88,474.08/132,710.76 = 72,858.72/x
3. Step 3: Cross multiply
   88,474.08x = 132,710.76 × 72,858.72
4. Step 4: Simplify right side
   88,474.08x = 9,669,136,103.83
5. Step 5: Solve for x
   x = 9,669,136,103.83/88,474.08
6. Step 6: Final answer
   x = 109,287.78