Finding the Fourth Proportional to 31,081.39, 42,892.32 and 16,934.23

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.39 : 42,892.32 = 16,934.23 : x
2. Step 2: Convert to fraction form
   31,081.39/42,892.32 = 16,934.23/x
3. Step 3: Cross multiply
   31,081.39x = 42,892.32 × 16,934.23
4. Step 4: Simplify right side
   31,081.39x = 726,348,327.44
5. Step 5: Solve for x
   x = 726,348,327.44/31,081.39
6. Step 6: Final answer
   x = 23,369.24