Finding the Fourth Proportional to 30,861.07, 42,589.15 and 17,432.89

Step by Step Solution

1. Step 1: Write the proportion equation
   30,861.07 : 42,589.15 = 17,432.89 : x
2. Step 2: Convert to fraction form
   30,861.07/42,589.15 = 17,432.89/x
3. Step 3: Cross multiply
   30,861.07x = 42,589.15 × 17,432.89
4. Step 4: Simplify right side
   30,861.07x = 742,452,074.86
5. Step 5: Solve for x
   x = 742,452,074.86/30,861.07
6. Step 6: Final answer
   x = 24,057.88