Finding the Fourth Proportional to 123,132.69, 169,489.26 and 89,085.96

Step by Step Solution

1. Step 1: Write the proportion equation
   123,132.69 : 169,489.26 = 89,085.96 : x
2. Step 2: Convert to fraction form
   123,132.69/169,489.26 = 89,085.96/x
3. Step 3: Cross multiply
   123,132.69x = 169,489.26 × 89,085.96
4. Step 4: Simplify right side
   123,132.69x = 15,099,113,436.79
5. Step 5: Solve for x
   x = 15,099,113,436.79/123,132.69
6. Step 6: Final answer
   x = 122,624.73