Finding the Fourth Proportional to 89,026.92, 133,436.52 and 72,416.72

Step by Step Solution

1. Step 1: Write the proportion equation
   89,026.92 : 133,436.52 = 72,416.72 : x
2. Step 2: Convert to fraction form
   89,026.92/133,436.52 = 72,416.72/x
3. Step 3: Cross multiply
   89,026.92x = 133,436.52 × 72,416.72
4. Step 4: Simplify right side
   89,026.92x = 9,663,035,106.61
5. Step 5: Solve for x
   x = 9,663,035,106.61/89,026.92
6. Step 6: Final answer
   x = 108,540.60