Finding the Fourth Proportional to 52,793.18, 72,854.62 and 28,920.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,793.18 : 72,854.62 = 28,920.72 : x
2. Step 2: Convert to fraction form
   52,793.18/72,854.62 = 28,920.72/x
3. Step 3: Cross multiply
   52,793.18x = 72,854.62 × 28,920.72
4. Step 4: Simplify right side
   52,793.18x = 2,107,008,065.73
5. Step 5: Solve for x
   x = 2,107,008,065.73/52,793.18
6. Step 6: Final answer
   x = 39,910.61