Finding the Fourth Proportional to 51,339.42, 70,844.31 and 28,676.61

Step by Step Solution

1. Step 1: Write the proportion equation
   51,339.42 : 70,844.31 = 28,676.61 : x
2. Step 2: Convert to fraction form
   51,339.42/70,844.31 = 28,676.61/x
3. Step 3: Cross multiply
   51,339.42x = 70,844.31 × 28,676.61
4. Step 4: Simplify right side
   51,339.42x = 2,031,574,648.59
5. Step 5: Solve for x
   x = 2,031,574,648.59/51,339.42
6. Step 6: Final answer
   x = 39,571.44