Finding the Fourth Proportional to 31,058.16, 42,860.46 and 16,911.06

Step by Step Solution

1. Step 1: Write the proportion equation
   31,058.16 : 42,860.46 = 16,911.06 : x
2. Step 2: Convert to fraction form
   31,058.16/42,860.46 = 16,911.06/x
3. Step 3: Cross multiply
   31,058.16x = 42,860.46 × 16,911.06
4. Step 4: Simplify right side
   31,058.16x = 724,815,810.69
5. Step 5: Solve for x
   x = 724,815,810.69/31,058.16
6. Step 6: Final answer
   x = 23,337.37