Finding the Fourth Proportional to 30,864.38, 42,589.43 and 17,432.79

Step by Step Solution

1. Step 1: Write the proportion equation
   30,864.38 : 42,589.43 = 17,432.79 : x
2. Step 2: Convert to fraction form
   30,864.38/42,589.43 = 17,432.79/x
3. Step 3: Cross multiply
   30,864.38x = 42,589.43 × 17,432.79
4. Step 4: Simplify right side
   30,864.38x = 742,452,407.91
5. Step 5: Solve for x
   x = 742,452,407.91/30,864.38
6. Step 6: Final answer
   x = 24,055.32