Finding the Fourth Proportional to 30,545.49, 42,152.72 and 18,608.83

Step by Step Solution

1. Step 1: Write the proportion equation
   30,545.49 : 42,152.72 = 18,608.83 : x
2. Step 2: Convert to fraction form
   30,545.49/42,152.72 = 18,608.83/x
3. Step 3: Cross multiply
   30,545.49x = 42,152.72 × 18,608.83
4. Step 4: Simplify right side
   30,545.49x = 784,412,800.52
5. Step 5: Solve for x
   x = 784,412,800.52/30,545.49
6. Step 6: Final answer
   x = 25,680.15