Finding the Fourth Proportional to 89,901.72, 134,168.99 and 79,937.46

Step by Step Solution

1. Step 1: Write the proportion equation
   89,901.72 : 134,168.99 = 79,937.46 : x
2. Step 2: Convert to fraction form
   89,901.72/134,168.99 = 79,937.46/x
3. Step 3: Cross multiply
   89,901.72x = 134,168.99 × 79,937.46
4. Step 4: Simplify right side
   89,901.72x = 10,725,127,871.68
5. Step 5: Solve for x
   x = 10,725,127,871.68/89,901.72
6. Step 6: Final answer
   x = 119,298.36