Finding the Fourth Proportional to 123,761.99, 170,786.98 and 67,172.15

Step by Step Solution

1. Step 1: Write the proportion equation
   123,761.99 : 170,786.98 = 67,172.15 : x
2. Step 2: Convert to fraction form
   123,761.99/170,786.98 = 67,172.15/x
3. Step 3: Cross multiply
   123,761.99x = 170,786.98 × 67,172.15
4. Step 4: Simplify right side
   123,761.99x = 11,472,129,149.54
5. Step 5: Solve for x
   x = 11,472,129,149.54/123,761.99
6. Step 6: Final answer
   x = 92,695.09