Finding the Fourth Proportional to 51,442.45, 70,993.88 and 28,784.05

Step by Step Solution

1. Step 1: Write the proportion equation
   51,442.45 : 70,993.88 = 28,784.05 : x
2. Step 2: Convert to fraction form
   51,442.45/70,993.88 = 28,784.05/x
3. Step 3: Cross multiply
   51,442.45x = 70,993.88 × 28,784.05
4. Step 4: Simplify right side
   51,442.45x = 2,043,491,391.61
5. Step 5: Solve for x
   x = 2,043,491,391.61/51,442.45
6. Step 6: Final answer
   x = 39,723.83