Finding the Fourth Proportional to 30,674.71, 42,329.16 and 17,245.78

Step by Step Solution

1. Step 1: Write the proportion equation
   30,674.71 : 42,329.16 = 17,245.78 : x
2. Step 2: Convert to fraction form
   30,674.71/42,329.16 = 17,245.78/x
3. Step 3: Cross multiply
   30,674.71x = 42,329.16 × 17,245.78
4. Step 4: Simplify right side
   30,674.71x = 729,999,380.94
5. Step 5: Solve for x
   x = 729,999,380.94/30,674.71
6. Step 6: Final answer
   x = 23,798.09