Finding the Fourth Proportional to 123,499.50, 170,429.48 and 66,910.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,499.50 : 170,429.48 = 66,910.88 : x
2. Step 2: Convert to fraction form
   123,499.50/170,429.48 = 66,910.88/x
3. Step 3: Cross multiply
   123,499.50x = 170,429.48 × 66,910.88
4. Step 4: Simplify right side
   123,499.50x = 11,403,586,484.74
5. Step 5: Solve for x
   x = 11,403,586,484.74/123,499.50
6. Step 6: Final answer
   x = 92,337.11