Finding the Fourth Proportional to 72,576.67, 108,871.85 and 28,206.83

Step by Step Solution

1. Step 1: Write the proportion equation
   72,576.67 : 108,871.85 = 28,206.83 : x
2. Step 2: Convert to fraction form
   72,576.67/108,871.85 = 28,206.83/x
3. Step 3: Cross multiply
   72,576.67x = 108,871.85 × 28,206.83
4. Step 4: Simplify right side
   72,576.67x = 3,070,929,290.89
5. Step 5: Solve for x
   x = 3,070,929,290.89/72,576.67
6. Step 6: Final answer
   x = 42,312.90