Finding the Fourth Proportional to 30,707.98, 42,382.17 and 17,785.36

Step by Step Solution

1. Step 1: Write the proportion equation
   30,707.98 : 42,382.17 = 17,785.36 : x
2. Step 2: Convert to fraction form
   30,707.98/42,382.17 = 17,785.36/x
3. Step 3: Cross multiply
   30,707.98x = 42,382.17 × 17,785.36
4. Step 4: Simplify right side
   30,707.98x = 753,782,151.03
5. Step 5: Solve for x
   x = 753,782,151.03/30,707.98
6. Step 6: Final answer
   x = 24,546.78