Finding the Fourth Proportional to 31,081.68, 42,892.48 and 16,934.54

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.68 : 42,892.48 = 16,934.54 : x
2. Step 2: Convert to fraction form
   31,081.68/42,892.48 = 16,934.54/x
3. Step 3: Cross multiply
   31,081.68x = 42,892.48 × 16,934.54
4. Step 4: Simplify right side
   31,081.68x = 726,364,418.26
5. Step 5: Solve for x
   x = 726,364,418.26/31,081.68
6. Step 6: Final answer
   x = 23,369.54