Finding the Fourth Proportional to 71,973.56, 99,323.52 and 40,142.49

Step by Step Solution

1. Step 1: Write the proportion equation
   71,973.56 : 99,323.52 = 40,142.49 : x
2. Step 2: Convert to fraction form
   71,973.56/99,323.52 = 40,142.49/x
3. Step 3: Cross multiply
   71,973.56x = 99,323.52 × 40,142.49
4. Step 4: Simplify right side
   71,973.56x = 3,987,092,885.37
5. Step 5: Solve for x
   x = 3,987,092,885.37/71,973.56
6. Step 6: Final answer
   x = 55,396.63