Finding the Fourth Proportional to 30,545.67, 42,153.03 and 18,609

Step by Step Solution

1. Step 1: Write the proportion equation
   30,545.67 : 42,153.03 = 18,609 : x
2. Step 2: Convert to fraction form
   30,545.67/42,153.03 = 18,609/x
3. Step 3: Cross multiply
   30,545.67x = 42,153.03 × 18,609
4. Step 4: Simplify right side
   30,545.67x = 784,425,665.49
5. Step 5: Solve for x
   x = 784,425,665.49/30,545.67
6. Step 6: Final answer
   x = 25,680.42