Finding the Fourth Proportional to 123,158.96, 169,977 and 89,279.60

Step by Step Solution

1. Step 1: Write the proportion equation
   123,158.96 : 169,977 = 89,279.60 : x
2. Step 2: Convert to fraction form
   123,158.96/169,977 = 89,279.60/x
3. Step 3: Cross multiply
   123,158.96x = 169,977 × 89,279.60
4. Step 4: Simplify right side
   123,158.96x = 15,175,478,569.20
5. Step 5: Solve for x
   x = 15,175,478,569.20/123,158.96
6. Step 6: Final answer
   x = 123,218.63