Finding the Fourth Proportional to 52,612.62, 72,606.72 and 28,739.52

Step by Step Solution

1. Step 1: Write the proportion equation
   52,612.62 : 72,606.72 = 28,739.52 : x
2. Step 2: Convert to fraction form
   52,612.62/72,606.72 = 28,739.52/x
3. Step 3: Cross multiply
   52,612.62x = 72,606.72 × 28,739.52
4. Step 4: Simplify right side
   52,612.62x = 2,086,682,281.57
5. Step 5: Solve for x
   x = 2,086,682,281.57/52,612.62
6. Step 6: Final answer
   x = 39,661.25