Finding the Fourth Proportional to 30,699.57, 42,363.68 and 17,271.39

Step by Step Solution

1. Step 1: Write the proportion equation
   30,699.57 : 42,363.68 = 17,271.39 : x
2. Step 2: Convert to fraction form
   30,699.57/42,363.68 = 17,271.39/x
3. Step 3: Cross multiply
   30,699.57x = 42,363.68 × 17,271.39
4. Step 4: Simplify right side
   30,699.57x = 731,679,552.76
5. Step 5: Solve for x
   x = 731,679,552.76/30,699.57
6. Step 6: Final answer
   x = 23,833.54