Finding the Fourth Proportional to 31,124.79, 42,939.97 and 19,167.37

Step by Step Solution

1. Step 1: Write the proportion equation
   31,124.79 : 42,939.97 = 19,167.37 : x
2. Step 2: Convert to fraction form
   31,124.79/42,939.97 = 19,167.37/x
3. Step 3: Cross multiply
   31,124.79x = 42,939.97 × 19,167.37
4. Step 4: Simplify right side
   31,124.79x = 823,046,292.78
5. Step 5: Solve for x
   x = 823,046,292.78/31,124.79
6. Step 6: Final answer
   x = 26,443.43