Finding the Fourth Proportional to 31,112.28, 42,935.79 and 19,014.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,112.28 : 42,935.79 = 19,014.72 : x
2. Step 2: Convert to fraction form
   31,112.28/42,935.79 = 19,014.72/x
3. Step 3: Cross multiply
   31,112.28x = 42,935.79 × 19,014.72
4. Step 4: Simplify right side
   31,112.28x = 816,412,024.83
5. Step 5: Solve for x
   x = 816,412,024.83/31,112.28
6. Step 6: Final answer
   x = 26,240.83