Finding the Fourth Proportional to 52,643.42, 72,648.88 and 28,771.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,643.42 : 72,648.88 = 28,771.10 : x
2. Step 2: Convert to fraction form
   52,643.42/72,648.88 = 28,771.10/x
3. Step 3: Cross multiply
   52,643.42x = 72,648.88 × 28,771.10
4. Step 4: Simplify right side
   52,643.42x = 2,090,188,191.37
5. Step 5: Solve for x
   x = 2,090,188,191.37/52,643.42
6. Step 6: Final answer
   x = 39,704.64