Finding the Fourth Proportional to 71,665.38, 98,872.65 and 49,270.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,665.38 : 98,872.65 = 49,270.50 : x
2. Step 2: Convert to fraction form
   71,665.38/98,872.65 = 49,270.50/x
3. Step 3: Cross multiply
   71,665.38x = 98,872.65 × 49,270.50
4. Step 4: Simplify right side
   71,665.38x = 4,871,504,901.83
5. Step 5: Solve for x
   x = 4,871,504,901.83/71,665.38
6. Step 6: Final answer
   x = 67,975.71