Finding the Fourth Proportional to 31,061.36, 42,868.27 and 17,631.36

Step by Step Solution

1. Step 1: Write the proportion equation
   31,061.36 : 42,868.27 = 17,631.36 : x
2. Step 2: Convert to fraction form
   31,061.36/42,868.27 = 17,631.36/x
3. Step 3: Cross multiply
   31,061.36x = 42,868.27 × 17,631.36
4. Step 4: Simplify right side
   31,061.36x = 755,825,900.95
5. Step 5: Solve for x
   x = 755,825,900.95/31,061.36
6. Step 6: Final answer
   x = 24,333.32