Finding the Fourth Proportional to 31,067.43, 42,863.63 and 17,638.44

Step by Step Solution

1. Step 1: Write the proportion equation
   31,067.43 : 42,863.63 = 17,638.44 : x
2. Step 2: Convert to fraction form
   31,067.43/42,863.63 = 17,638.44/x
3. Step 3: Cross multiply
   31,067.43x = 42,863.63 × 17,638.44
4. Step 4: Simplify right side
   31,067.43x = 756,047,477.75
5. Step 5: Solve for x
   x = 756,047,477.75/31,067.43
6. Step 6: Final answer
   x = 24,335.69