Finding the Fourth Proportional to 389,318.72, 582,922.82 and 201,936.56

Step by Step Solution

1. Step 1: Write the proportion equation
   389,318.72 : 582,922.82 = 201,936.56 : x
2. Step 2: Convert to fraction form
   389,318.72/582,922.82 = 201,936.56/x
3. Step 3: Cross multiply
   389,318.72x = 582,922.82 × 201,936.56
4. Step 4: Simplify right side
   389,318.72x = 117,713,429,016.30
5. Step 5: Solve for x
   x = 117,713,429,016.30/389,318.72
6. Step 6: Final answer
   x = 302,357.48