Finding the Fourth Proportional to 49,105.72, 67,762.70 and 28,957.98

Step by Step Solution

1. Step 1: Write the proportion equation
   49,105.72 : 67,762.70 = 28,957.98 : x
2. Step 2: Convert to fraction form
   49,105.72/67,762.70 = 28,957.98/x
3. Step 3: Cross multiply
   49,105.72x = 67,762.70 × 28,957.98
4. Step 4: Simplify right side
   49,105.72x = 1,962,270,911.35
5. Step 5: Solve for x
   x = 1,962,270,911.35/49,105.72
6. Step 6: Final answer
   x = 39,960.13