Finding the Fourth Proportional to 296,617.72, 444,922.82 and 71,980

Step by Step Solution

1. Step 1: Write the proportion equation
   296,617.72 : 444,922.82 = 71,980 : x
2. Step 2: Convert to fraction form
   296,617.72/444,922.82 = 71,980/x
3. Step 3: Cross multiply
   296,617.72x = 444,922.82 × 71,980
4. Step 4: Simplify right side
   296,617.72x = 32,025,544,583.60
5. Step 5: Solve for x
   x = 32,025,544,583.60/296,617.72
6. Step 6: Final answer
   x = 107,969.09