Finding the Fourth Proportional to 30,850.49, 42,573.38 and 17,421.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,850.49 : 42,573.38 = 17,421.50 : x
2. Step 2: Convert to fraction form
   30,850.49/42,573.38 = 17,421.50/x
3. Step 3: Cross multiply
   30,850.49x = 42,573.38 × 17,421.50
4. Step 4: Simplify right side
   30,850.49x = 741,691,839.70
5. Step 5: Solve for x
   x = 741,691,839.70/30,850.49
6. Step 6: Final answer
   x = 24,041.50