Finding the Fourth Proportional to 31,111.50, 42,933.87 and 19,934.22

Step by Step Solution

1. Step 1: Write the proportion equation
   31,111.50 : 42,933.87 = 19,934.22 : x
2. Step 2: Convert to fraction form
   31,111.50/42,933.87 = 19,934.22/x
3. Step 3: Cross multiply
   31,111.50x = 42,933.87 × 19,934.22
4. Step 4: Simplify right side
   31,111.50x = 855,853,210.03
5. Step 5: Solve for x
   x = 855,853,210.03/31,111.50
6. Step 6: Final answer
   x = 27,509.22