Finding the Fourth Proportional to 123,540.11, 185,380.17 and 56,980.23

Step by Step Solution

1. Step 1: Write the proportion equation
   123,540.11 : 185,380.17 = 56,980.23 : x
2. Step 2: Convert to fraction form
   123,540.11/185,380.17 = 56,980.23/x
3. Step 3: Cross multiply
   123,540.11x = 185,380.17 × 56,980.23
4. Step 4: Simplify right side
   123,540.11x = 10,563,004,724.04
5. Step 5: Solve for x
   x = 10,563,004,724.04/123,540.11
6. Step 6: Final answer
   x = 85,502.63