Finding the Fourth Proportional to 31,058.24, 42,860.07 and 16,911.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,058.24 : 42,860.07 = 16,911.32 : x
2. Step 2: Convert to fraction form
   31,058.24/42,860.07 = 16,911.32/x
3. Step 3: Cross multiply
   31,058.24x = 42,860.07 × 16,911.32
4. Step 4: Simplify right side
   31,058.24x = 724,820,144.69
5. Step 5: Solve for x
   x = 724,820,144.69/31,058.24
6. Step 6: Final answer
   x = 23,337.45