Finding the Fourth Proportional to 30,972.50, 42,741.98 and 17,543.72

Step by Step Solution

1. Step 1: Write the proportion equation
   30,972.50 : 42,741.98 = 17,543.72 : x
2. Step 2: Convert to fraction form
   30,972.50/42,741.98 = 17,543.72/x
3. Step 3: Cross multiply
   30,972.50x = 42,741.98 × 17,543.72
4. Step 4: Simplify right side
   30,972.50x = 749,853,329.37
5. Step 5: Solve for x
   x = 749,853,329.37/30,972.50
6. Step 6: Final answer
   x = 24,210.29