Finding the Fourth Proportional to 71,976.52, 99,325.47 and 40,144.69

Step by Step Solution

1. Step 1: Write the proportion equation
   71,976.52 : 99,325.47 = 40,144.69 : x
2. Step 2: Convert to fraction form
   71,976.52/99,325.47 = 40,144.69/x
3. Step 3: Cross multiply
   71,976.52x = 99,325.47 × 40,144.69
4. Step 4: Simplify right side
   71,976.52x = 3,987,390,202.25
5. Step 5: Solve for x
   x = 3,987,390,202.25/71,976.52
6. Step 6: Final answer
   x = 55,398.49