Finding the Fourth Proportional to 52,744.38, 72,785.46 and 28,870.56

Step by Step Solution

1. Step 1: Write the proportion equation
   52,744.38 : 72,785.46 = 28,870.56 : x
2. Step 2: Convert to fraction form
   52,744.38/72,785.46 = 28,870.56/x
3. Step 3: Cross multiply
   52,744.38x = 72,785.46 × 28,870.56
4. Step 4: Simplify right side
   52,744.38x = 2,101,356,990.06
5. Step 5: Solve for x
   x = 2,101,356,990.06/52,744.38
6. Step 6: Final answer
   x = 39,840.40