Finding the Fourth Proportional to 30,826.68, 42,540.65 and 17,402.30

Step by Step Solution

1. Step 1: Write the proportion equation
   30,826.68 : 42,540.65 = 17,402.30 : x
2. Step 2: Convert to fraction form
   30,826.68/42,540.65 = 17,402.30/x
3. Step 3: Cross multiply
   30,826.68x = 42,540.65 × 17,402.30
4. Step 4: Simplify right side
   30,826.68x = 740,304,853.78
5. Step 5: Solve for x
   x = 740,304,853.78/30,826.68
6. Step 6: Final answer
   x = 24,015.07