Finding the Fourth Proportional to 31,077.24, 42,887.25 and 16,930.05

Step by Step Solution

1. Step 1: Write the proportion equation
   31,077.24 : 42,887.25 = 16,930.05 : x
2. Step 2: Convert to fraction form
   31,077.24/42,887.25 = 16,930.05/x
3. Step 3: Cross multiply
   31,077.24x = 42,887.25 × 16,930.05
4. Step 4: Simplify right side
   31,077.24x = 726,083,286.86
5. Step 5: Solve for x
   x = 726,083,286.86/31,077.24
6. Step 6: Final answer
   x = 23,363.83