Finding the Fourth Proportional to 123,617.99, 185,458.07 and 57,105.17

Step by Step Solution

1. Step 1: Write the proportion equation
   123,617.99 : 185,458.07 = 57,105.17 : x
2. Step 2: Convert to fraction form
   123,617.99/185,458.07 = 57,105.17/x
3. Step 3: Cross multiply
   123,617.99x = 185,458.07 × 57,105.17
4. Step 4: Simplify right side
   123,617.99x = 10,590,613,402.41
5. Step 5: Solve for x
   x = 10,590,613,402.41/123,617.99
6. Step 6: Final answer
   x = 85,672.11