Finding the Fourth Proportional to 49,995.76, 69,009.52 and 28,789.16

Step by Step Solution

1. Step 1: Write the proportion equation
   49,995.76 : 69,009.52 = 28,789.16 : x
2. Step 2: Convert to fraction form
   49,995.76/69,009.52 = 28,789.16/x
3. Step 3: Cross multiply
   49,995.76x = 69,009.52 × 28,789.16
4. Step 4: Simplify right side
   49,995.76x = 1,986,726,112.80
5. Step 5: Solve for x
   x = 1,986,726,112.80/49,995.76
6. Step 6: Final answer
   x = 39,737.89