Finding the Fourth Proportional to 71,919.33, 99,249.98 and 40,084.81

Step by Step Solution

1. Step 1: Write the proportion equation
   71,919.33 : 99,249.98 = 40,084.81 : x
2. Step 2: Convert to fraction form
   71,919.33/99,249.98 = 40,084.81/x
3. Step 3: Cross multiply
   71,919.33x = 99,249.98 × 40,084.81
4. Step 4: Simplify right side
   71,919.33x = 3,978,416,142.25
5. Step 5: Solve for x
   x = 3,978,416,142.25/71,919.33
6. Step 6: Final answer
   x = 55,317.76