Finding the Fourth Proportional to 31,414.77, 43,340.10 and 17,978.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,414.77 : 43,340.10 = 17,978.82 : x
2. Step 2: Convert to fraction form
   31,414.77/43,340.10 = 17,978.82/x
3. Step 3: Cross multiply
   31,414.77x = 43,340.10 × 17,978.82
4. Step 4: Simplify right side
   31,414.77x = 779,203,856.68
5. Step 5: Solve for x
   x = 779,203,856.68/31,414.77
6. Step 6: Final answer
   x = 24,803.74