Finding the Fourth Proportional to 31,105.52, 42,926.49 and 19,007.97

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.52 : 42,926.49 = 19,007.97 : x
2. Step 2: Convert to fraction form
   31,105.52/42,926.49 = 19,007.97/x
3. Step 3: Cross multiply
   31,105.52x = 42,926.49 × 19,007.97
4. Step 4: Simplify right side
   31,105.52x = 815,945,434.13
5. Step 5: Solve for x
   x = 815,945,434.13/31,105.52
6. Step 6: Final answer
   x = 26,231.54