Finding the Fourth Proportional to 30,487.16, 42,073.91 and 17,057.61

Step by Step Solution

1. Step 1: Write the proportion equation
   30,487.16 : 42,073.91 = 17,057.61 : x
2. Step 2: Convert to fraction form
   30,487.16/42,073.91 = 17,057.61/x
3. Step 3: Cross multiply
   30,487.16x = 42,073.91 × 17,057.61
4. Step 4: Simplify right side
   30,487.16x = 717,680,347.96
5. Step 5: Solve for x
   x = 717,680,347.96/30,487.16
6. Step 6: Final answer
   x = 23,540.41