Finding the Fourth Proportional to 73,174.50, 100,981.89 and 39,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73,174.50 : 100,981.89 = 39,640.50 : x
2. Step 2: Convert to fraction form
   73,174.50/100,981.89 = 39,640.50/x
3. Step 3: Cross multiply
   73,174.50x = 100,981.89 × 39,640.50
4. Step 4: Simplify right side
   73,174.50x = 4,002,972,610.55
5. Step 5: Solve for x
   x = 4,002,972,610.55/73,174.50
6. Step 6: Final answer
   x = 54,704.48