Finding the Fourth Proportional to 51,086.69, 70,499.93 and 28,730.69

Step by Step Solution

1. Step 1: Write the proportion equation
   51,086.69 : 70,499.93 = 28,730.69 : x
2. Step 2: Convert to fraction form
   51,086.69/70,499.93 = 28,730.69/x
3. Step 3: Cross multiply
   51,086.69x = 70,499.93 × 28,730.69
4. Step 4: Simplify right side
   51,086.69x = 2,025,511,633.85
5. Step 5: Solve for x
   x = 2,025,511,633.85/51,086.69
6. Step 6: Final answer
   x = 39,648.52