Finding the Fourth Proportional to 52,730.21, 72,766.72 and 28,856.41

Step by Step Solution

1. Step 1: Write the proportion equation
   52,730.21 : 72,766.72 = 28,856.41 : x
2. Step 2: Convert to fraction form
   52,730.21/72,766.72 = 28,856.41/x
3. Step 3: Cross multiply
   52,730.21x = 72,766.72 × 28,856.41
4. Step 4: Simplify right side
   52,730.21x = 2,099,786,160.83
5. Step 5: Solve for x
   x = 2,099,786,160.83/52,730.21
6. Step 6: Final answer
   x = 39,821.31