Finding the Fourth Proportional to 30,609.63, 42,241.37 and 17,871.57

Step by Step Solution

1. Step 1: Write the proportion equation
   30,609.63 : 42,241.37 = 17,871.57 : x
2. Step 2: Convert to fraction form
   30,609.63/42,241.37 = 17,871.57/x
3. Step 3: Cross multiply
   30,609.63x = 42,241.37 × 17,871.57
4. Step 4: Simplify right side
   30,609.63x = 754,919,511.49
5. Step 5: Solve for x
   x = 754,919,511.49/30,609.63
6. Step 6: Final answer
   x = 24,662.81