Finding the Fourth Proportional to 123,087.88, 169,861.06 and 66,499.08

Step by Step Solution

1. Step 1: Write the proportion equation
   123,087.88 : 169,861.06 = 66,499.08 : x
2. Step 2: Convert to fraction form
   123,087.88/169,861.06 = 66,499.08/x
3. Step 3: Cross multiply
   123,087.88x = 169,861.06 × 66,499.08
4. Step 4: Simplify right side
   123,087.88x = 11,295,604,217.82
5. Step 5: Solve for x
   x = 11,295,604,217.82/123,087.88
6. Step 6: Final answer
   x = 91,768.61