Finding the Fourth Proportional to 52,612.50, 72,604.82 and 28,739.18

Step by Step Solution

1. Step 1: Write the proportion equation
   52,612.50 : 72,604.82 = 28,739.18 : x
2. Step 2: Convert to fraction form
   52,612.50/72,604.82 = 28,739.18/x
3. Step 3: Cross multiply
   52,612.50x = 72,604.82 × 28,739.18
4. Step 4: Simplify right side
   52,612.50x = 2,086,602,990.85
5. Step 5: Solve for x
   x = 2,086,602,990.85/52,612.50
6. Step 6: Final answer
   x = 39,659.83