Finding the Fourth Proportional to 89,924.46, 134,553.78 and 72,100.61

Step by Step Solution

1. Step 1: Write the proportion equation
   89,924.46 : 134,553.78 = 72,100.61 : x
2. Step 2: Convert to fraction form
   89,924.46/134,553.78 = 72,100.61/x
3. Step 3: Cross multiply
   89,924.46x = 134,553.78 × 72,100.61
4. Step 4: Simplify right side
   89,924.46x = 9,701,409,952.19
5. Step 5: Solve for x
   x = 9,701,409,952.19/89,924.46
6. Step 6: Final answer
   x = 107,883.99