Finding the Fourth Proportional to 269,871.02, 404,735.88 and 80,280.31

Step by Step Solution

1. Step 1: Write the proportion equation
   269,871.02 : 404,735.88 = 80,280.31 : x
2. Step 2: Convert to fraction form
   269,871.02/404,735.88 = 80,280.31/x
3. Step 3: Cross multiply
   269,871.02x = 404,735.88 × 80,280.31
4. Step 4: Simplify right side
   269,871.02x = 32,492,321,914.52
5. Step 5: Solve for x
   x = 32,492,321,914.52/269,871.02
6. Step 6: Final answer
   x = 120,399.45