Finding the Fourth Proportional to 89,744.10, 134,616.15 and 72,248.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89,744.10 : 134,616.15 = 72,248.10 : x
2. Step 2: Convert to fraction form
   89,744.10/134,616.15 = 72,248.10/x
3. Step 3: Cross multiply
   89,744.10x = 134,616.15 × 72,248.10
4. Step 4: Simplify right side
   89,744.10x = 9,725,761,066.82
5. Step 5: Solve for x
   x = 9,725,761,066.82/89,744.10
6. Step 6: Final answer
   x = 108,372.15