Finding the Fourth Proportional to 52,743.60, 72,786.24 and 28,871.78

Step by Step Solution

1. Step 1: Write the proportion equation
   52,743.60 : 72,786.24 = 28,871.78 : x
2. Step 2: Convert to fraction form
   52,743.60/72,786.24 = 28,871.78/x
3. Step 3: Cross multiply
   52,743.60x = 72,786.24 × 28,871.78
4. Step 4: Simplify right side
   52,743.60x = 2,101,468,308.31
5. Step 5: Solve for x
   x = 2,101,468,308.31/52,743.60
6. Step 6: Final answer
   x = 39,843.10