Finding the Fourth Proportional to 30,781.98, 42,475.04 and 17,353.80

Step by Step Solution

1. Step 1: Write the proportion equation
   30,781.98 : 42,475.04 = 17,353.80 : x
2. Step 2: Convert to fraction form
   30,781.98/42,475.04 = 17,353.80/x
3. Step 3: Cross multiply
   30,781.98x = 42,475.04 × 17,353.80
4. Step 4: Simplify right side
   30,781.98x = 737,103,349.15
5. Step 5: Solve for x
   x = 737,103,349.15/30,781.98
6. Step 6: Final answer
   x = 23,945.94