Finding the Fourth Proportional to 51,818.85, 71,510.31 and 30,608.55

Step by Step Solution

1. Step 1: Write the proportion equation
   51,818.85 : 71,510.31 = 30,608.55 : x
2. Step 2: Convert to fraction form
   51,818.85/71,510.31 = 30,608.55/x
3. Step 3: Cross multiply
   51,818.85x = 71,510.31 × 30,608.55
4. Step 4: Simplify right side
   51,818.85x = 2,188,826,899.15
5. Step 5: Solve for x
   x = 2,188,826,899.15/51,818.85
6. Step 6: Final answer
   x = 42,239.97