Finding the Fourth Proportional to 52,676.39, 72,687.47 and 31,166.80

Step by Step Solution

1. Step 1: Write the proportion equation
   52,676.39 : 72,687.47 = 31,166.80 : x
2. Step 2: Convert to fraction form
   52,676.39/72,687.47 = 31,166.80/x
3. Step 3: Cross multiply
   52,676.39x = 72,687.47 × 31,166.80
4. Step 4: Simplify right side
   52,676.39x = 2,265,435,320.72
5. Step 5: Solve for x
   x = 2,265,435,320.72/52,676.39
6. Step 6: Final answer
   x = 43,006.65