Finding the Fourth Proportional to 52,847.43, 72,934.06 and 28,978.76

Step by Step Solution

1. Step 1: Write the proportion equation
   52,847.43 : 72,934.06 = 28,978.76 : x
2. Step 2: Convert to fraction form
   52,847.43/72,934.06 = 28,978.76/x
3. Step 3: Cross multiply
   52,847.43x = 72,934.06 × 28,978.76
4. Step 4: Simplify right side
   52,847.43x = 2,113,538,620.57
5. Step 5: Solve for x
   x = 2,113,538,620.57/52,847.43
6. Step 6: Final answer
   x = 39,993.21