Finding the Fourth Proportional to 52,727.50, 72,761.61 and 28,855.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,727.50 : 72,761.61 = 28,855.18 : x
2. Step 2: Convert to fraction form
   52,727.50/72,761.61 = 28,855.18/x
3. Step 3: Cross multiply
   52,727.50x = 72,761.61 × 28,855.18
4. Step 4: Simplify right side
   52,727.50x = 2,099,549,279.94
5. Step 5: Solve for x
   x = 2,099,549,279.94/52,727.50
6. Step 6: Final answer
   x = 39,818.87