Finding the Fourth Proportional to 269,431.30, 404,114.55 and 111,643.30

Step by Step Solution

1. Step 1: Write the proportion equation
   269,431.30 : 404,114.55 = 111,643.30 : x
2. Step 2: Convert to fraction form
   269,431.30/404,114.55 = 111,643.30/x
3. Step 3: Cross multiply
   269,431.30x = 404,114.55 × 111,643.30
4. Step 4: Simplify right side
   269,431.30x = 45,116,681,940.02
5. Step 5: Solve for x
   x = 45,116,681,940.02/269,431.30
6. Step 6: Final answer
   x = 167,451.52