Finding the Fourth Proportional to 31,144.43, 42,960.09 and 22,194.80

Step by Step Solution

1. Step 1: Write the proportion equation
   31,144.43 : 42,960.09 = 22,194.80 : x
2. Step 2: Convert to fraction form
   31,144.43/42,960.09 = 22,194.80/x
3. Step 3: Cross multiply
   31,144.43x = 42,960.09 × 22,194.80
4. Step 4: Simplify right side
   31,144.43x = 953,490,605.53
5. Step 5: Solve for x
   x = 953,490,605.53/31,144.43
6. Step 6: Final answer
   x = 30,615.12