Finding the Fourth Proportional to 123,146.88, 169,942.72 and 66,558.08

Step by Step Solution

1. Step 1: Write the proportion equation
   123,146.88 : 169,942.72 = 66,558.08 : x
2. Step 2: Convert to fraction form
   123,146.88/169,942.72 = 66,558.08/x
3. Step 3: Cross multiply
   123,146.88x = 169,942.72 × 66,558.08
4. Step 4: Simplify right side
   123,146.88x = 11,311,061,153.18
5. Step 5: Solve for x
   x = 11,311,061,153.18/123,146.88
6. Step 6: Final answer
   x = 91,850.16