Finding the Fourth Proportional to 123,158.17, 169,958.17 and 66,569.55

Step by Step Solution

1. Step 1: Write the proportion equation
   123,158.17 : 169,958.17 = 66,569.55 : x
2. Step 2: Convert to fraction form
   123,158.17/169,958.17 = 66,569.55/x
3. Step 3: Cross multiply
   123,158.17x = 169,958.17 × 66,569.55
4. Step 4: Simplify right side
   123,158.17x = 11,314,038,895.72
5. Step 5: Solve for x
   x = 11,314,038,895.72/123,158.17
6. Step 6: Final answer
   x = 91,865.92