Finding the Fourth Proportional to 123,517.36, 185,134.90 and 56,100.81

Step by Step Solution

1. Step 1: Write the proportion equation
   123,517.36 : 185,134.90 = 56,100.81 : x
2. Step 2: Convert to fraction form
   123,517.36/185,134.90 = 56,100.81/x
3. Step 3: Cross multiply
   123,517.36x = 185,134.90 × 56,100.81
4. Step 4: Simplify right side
   123,517.36x = 10,386,217,849.27
5. Step 5: Solve for x
   x = 10,386,217,849.27/123,517.36
6. Step 6: Final answer
   x = 84,087.11