Finding the Fourth Proportional to 31,012.22, 42,797.99 and 17,766.78

Step by Step Solution

1. Step 1: Write the proportion equation
   31,012.22 : 42,797.99 = 17,766.78 : x
2. Step 2: Convert to fraction form
   31,012.22/42,797.99 = 17,766.78/x
3. Step 3: Cross multiply
   31,012.22x = 42,797.99 × 17,766.78
4. Step 4: Simplify right side
   31,012.22x = 760,382,472.77
5. Step 5: Solve for x
   x = 760,382,472.77/31,012.22
6. Step 6: Final answer
   x = 24,518.80