Finding the Fourth Proportional to 123,158.39, 169,958.32 and 66,569.63

Step by Step Solution

1. Step 1: Write the proportion equation
   123,158.39 : 169,958.32 = 66,569.63 : x
2. Step 2: Convert to fraction form
   123,158.39/169,958.32 = 66,569.63/x
3. Step 3: Cross multiply
   123,158.39x = 169,958.32 × 66,569.63
4. Step 4: Simplify right side
   123,158.39x = 11,314,061,461.61
5. Step 5: Solve for x
   x = 11,314,061,461.61/123,158.39
6. Step 6: Final answer
   x = 91,865.95