Finding the Fourth Proportional to 31,078.91, 42,887.41 and 17,648.39

Step by Step Solution

1. Step 1: Write the proportion equation
   31,078.91 : 42,887.41 = 17,648.39 : x
2. Step 2: Convert to fraction form
   31,078.91/42,887.41 = 17,648.39/x
3. Step 3: Cross multiply
   31,078.91x = 42,887.41 × 17,648.39
4. Step 4: Simplify right side
   31,078.91x = 756,893,800.87
5. Step 5: Solve for x
   x = 756,893,800.87/31,078.91
6. Step 6: Final answer
   x = 24,353.93