Finding the Fourth Proportional to 52,839.88, 72,919.10 and 28,967.42

Step by Step Solution

1. Step 1: Write the proportion equation
   52,839.88 : 72,919.10 = 28,967.42 : x
2. Step 2: Convert to fraction form
   52,839.88/72,919.10 = 28,967.42/x
3. Step 3: Cross multiply
   52,839.88x = 72,919.10 × 28,967.42
4. Step 4: Simplify right side
   52,839.88x = 2,112,278,195.72
5. Step 5: Solve for x
   x = 2,112,278,195.72/52,839.88
6. Step 6: Final answer
   x = 39,975.08