Finding the Fourth Proportional to 31,058.58, 42,860.92 and 16,911.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,058.58 : 42,860.92 = 16,911.50 : x
2. Step 2: Convert to fraction form
   31,058.58/42,860.92 = 16,911.50/x
3. Step 3: Cross multiply
   31,058.58x = 42,860.92 × 16,911.50
4. Step 4: Simplify right side
   31,058.58x = 724,842,448.58
5. Step 5: Solve for x
   x = 724,842,448.58/31,058.58
6. Step 6: Final answer
   x = 23,337.91