Finding the Fourth Proportional to 51,479.92, 71,041.71 and 28,818.55

Step by Step Solution

1. Step 1: Write the proportion equation
   51,479.92 : 71,041.71 = 28,818.55 : x
2. Step 2: Convert to fraction form
   51,479.92/71,041.71 = 28,818.55/x
3. Step 3: Cross multiply
   51,479.92x = 71,041.71 × 28,818.55
4. Step 4: Simplify right side
   51,479.92x = 2,047,319,071.72
5. Step 5: Solve for x
   x = 2,047,319,071.72/51,479.92
6. Step 6: Final answer
   x = 39,769.27