Finding the Fourth Proportional to 52,739.94, 72,780.89 and 28,866.54

Step by Step Solution

1. Step 1: Write the proportion equation
   52,739.94 : 72,780.89 = 28,866.54 : x
2. Step 2: Convert to fraction form
   52,739.94/72,780.89 = 28,866.54/x
3. Step 3: Cross multiply
   52,739.94x = 72,780.89 × 28,866.54
4. Step 4: Simplify right side
   52,739.94x = 2,100,932,328.09
5. Step 5: Solve for x
   x = 2,100,932,328.09/52,739.94
6. Step 6: Final answer
   x = 39,835.70