Finding the Fourth Proportional to 31,057.09, 42,859.82 and 17,447.51

Step by Step Solution

1. Step 1: Write the proportion equation
   31,057.09 : 42,859.82 = 17,447.51 : x
2. Step 2: Convert to fraction form
   31,057.09/42,859.82 = 17,447.51/x
3. Step 3: Cross multiply
   31,057.09x = 42,859.82 × 17,447.51
4. Step 4: Simplify right side
   31,057.09x = 747,797,288.82
5. Step 5: Solve for x
   x = 747,797,288.82/31,057.09
6. Step 6: Final answer
   x = 24,078.15