Finding the Fourth Proportional to 52,851.62, 72,934.68 and 28,978.24

Step by Step Solution

1. Step 1: Write the proportion equation
   52,851.62 : 72,934.68 = 28,978.24 : x
2. Step 2: Convert to fraction form
   52,851.62/72,934.68 = 28,978.24/x
3. Step 3: Cross multiply
   52,851.62x = 72,934.68 × 28,978.24
4. Step 4: Simplify right side
   52,851.62x = 2,113,518,661.36
5. Step 5: Solve for x
   x = 2,113,518,661.36/52,851.62
6. Step 6: Final answer
   x = 39,989.67