Finding the Fourth Proportional to 52,550.62, 72,521.39 and 28,678.83

Step by Step Solution

1. Step 1: Write the proportion equation
   52,550.62 : 72,521.39 = 28,678.83 : x
2. Step 2: Convert to fraction form
   52,550.62/72,521.39 = 28,678.83/x
3. Step 3: Cross multiply
   52,550.62x = 72,521.39 × 28,678.83
4. Step 4: Simplify right side
   52,550.62x = 2,079,828,414.92
5. Step 5: Solve for x
   x = 2,079,828,414.92/52,550.62
6. Step 6: Final answer
   x = 39,577.62