Finding the Fourth Proportional to 30,487.54, 42,074.43 and 17,057.99

Step by Step Solution

1. Step 1: Write the proportion equation
   30,487.54 : 42,074.43 = 17,057.99 : x
2. Step 2: Convert to fraction form
   30,487.54/42,074.43 = 17,057.99/x
3. Step 3: Cross multiply
   30,487.54x = 42,074.43 × 17,057.99
4. Step 4: Simplify right side
   30,487.54x = 717,705,206.20
5. Step 5: Solve for x
   x = 717,705,206.20/30,487.54
6. Step 6: Final answer
   x = 23,540.94