Finding the Fourth Proportional to 52,854.88, 72,939.15 and 28,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,854.88 : 72,939.15 = 28,981.50 : x
2. Step 2: Convert to fraction form
   52,854.88/72,939.15 = 28,981.50/x
3. Step 3: Cross multiply
   52,854.88x = 72,939.15 × 28,981.50
4. Step 4: Simplify right side
   52,854.88x = 2,113,885,975.73
5. Step 5: Solve for x
   x = 2,113,885,975.73/52,854.88
6. Step 6: Final answer
   x = 39,994.15