Finding the Fourth Proportional to 123,086.96, 169,860 and 66,498.33

Step by Step Solution

1. Step 1: Write the proportion equation
   123,086.96 : 169,860 = 66,498.33 : x
2. Step 2: Convert to fraction form
   123,086.96/169,860 = 66,498.33/x
3. Step 3: Cross multiply
   123,086.96x = 169,860 × 66,498.33
4. Step 4: Simplify right side
   123,086.96x = 11,295,406,333.80
5. Step 5: Solve for x
   x = 11,295,406,333.80/123,086.96
6. Step 6: Final answer
   x = 91,767.70