Finding the Fourth Proportional to 51,479.30, 71,036.25 and 28,816.82

Step by Step Solution

1. Step 1: Write the proportion equation
   51,479.30 : 71,036.25 = 28,816.82 : x
2. Step 2: Convert to fraction form
   51,479.30/71,036.25 = 28,816.82/x
3. Step 3: Cross multiply
   51,479.30x = 71,036.25 × 28,816.82
4. Step 4: Simplify right side
   51,479.30x = 2,047,038,829.73
5. Step 5: Solve for x
   x = 2,047,038,829.73/51,479.30
6. Step 6: Final answer
   x = 39,764.31