Finding the Fourth Proportional to 30,531.98, 42,134.50 and 17,103

Step by Step Solution

1. Step 1: Write the proportion equation
   30,531.98 : 42,134.50 = 17,103 : x
2. Step 2: Convert to fraction form
   30,531.98/42,134.50 = 17,103/x
3. Step 3: Cross multiply
   30,531.98x = 42,134.50 × 17,103
4. Step 4: Simplify right side
   30,531.98x = 720,626,353.50
5. Step 5: Solve for x
   x = 720,626,353.50/30,531.98
6. Step 6: Final answer
   x = 23,602.35