Finding the Fourth Proportional to 30,698.16, 42,363.02 and 17,086.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,698.16 : 42,363.02 = 17,086.12 : x
2. Step 2: Convert to fraction form
   30,698.16/42,363.02 = 17,086.12/x
3. Step 3: Cross multiply
   30,698.16x = 42,363.02 × 17,086.12
4. Step 4: Simplify right side
   30,698.16x = 723,819,643.28
5. Step 5: Solve for x
   x = 723,819,643.28/30,698.16
6. Step 6: Final answer
   x = 23,578.60