Finding the Fourth Proportional to 51,271.05, 70,753.81 and 28,608.72

Step by Step Solution

1. Step 1: Write the proportion equation
   51,271.05 : 70,753.81 = 28,608.72 : x
2. Step 2: Convert to fraction form
   51,271.05/70,753.81 = 28,608.72/x
3. Step 3: Cross multiply
   51,271.05x = 70,753.81 × 28,608.72
4. Step 4: Simplify right side
   51,271.05x = 2,024,175,939.22
5. Step 5: Solve for x
   x = 2,024,175,939.22/51,271.05
6. Step 6: Final answer
   x = 39,479.90