Finding the Fourth Proportional to 52,872.68, 72,978.18 and 31,668.52

Step by Step Solution

1. Step 1: Write the proportion equation
   52,872.68 : 72,978.18 = 31,668.52 : x
2. Step 2: Convert to fraction form
   52,872.68/72,978.18 = 31,668.52/x
3. Step 3: Cross multiply
   52,872.68x = 72,978.18 × 31,668.52
4. Step 4: Simplify right side
   52,872.68x = 2,311,110,952.89
5. Step 5: Solve for x
   x = 2,311,110,952.89/52,872.68
6. Step 6: Final answer
   x = 43,710.87