Finding the Fourth Proportional to 30,459.98, 42,017.88 and 17,711.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,459.98 : 42,017.88 = 17,711.75 : x
2. Step 2: Convert to fraction form
   30,459.98/42,017.88 = 17,711.75/x
3. Step 3: Cross multiply
   30,459.98x = 42,017.88 × 17,711.75
4. Step 4: Simplify right side
   30,459.98x = 744,209,976.00
5. Step 5: Solve for x
   x = 744,209,976.00/30,459.98
6. Step 6: Final answer
   x = 24,432.39