Finding the Fourth Proportional to 52,704.24, 72,724.68 and 31,479

Step by Step Solution

1. Step 1: Write the proportion equation
   52,704.24 : 72,724.68 = 31,479 : x
2. Step 2: Convert to fraction form
   52,704.24/72,724.68 = 31,479/x
3. Step 3: Cross multiply
   52,704.24x = 72,724.68 × 31,479
4. Step 4: Simplify right side
   52,704.24x = 2,289,300,201.72
5. Step 5: Solve for x
   x = 2,289,300,201.72/52,704.24
6. Step 6: Final answer
   x = 43,436.74