Finding the Fourth Proportional to 52,729.49, 72,766.68 and 28,856.15

Step by Step Solution

1. Step 1: Write the proportion equation
   52,729.49 : 72,766.68 = 28,856.15 : x
2. Step 2: Convert to fraction form
   52,729.49/72,766.68 = 28,856.15/x
3. Step 3: Cross multiply
   52,729.49x = 72,766.68 × 28,856.15
4. Step 4: Simplify right side
   52,729.49x = 2,099,766,233.08
5. Step 5: Solve for x
   x = 2,099,766,233.08/52,729.49
6. Step 6: Final answer
   x = 39,821.48