Finding the Fourth Proportional to 401,016.51, 553,395.56 and 237,782.88

Step by Step Solution

1. Step 1: Write the proportion equation
   401,016.51 : 553,395.56 = 237,782.88 : x
2. Step 2: Convert to fraction form
   401,016.51/553,395.56 = 237,782.88/x
3. Step 3: Cross multiply
   401,016.51x = 553,395.56 × 237,782.88
4. Step 4: Simplify right side
   401,016.51x = 131,587,988,847.10
5. Step 5: Solve for x
   x = 131,587,988,847.10/401,016.51
6. Step 6: Final answer
   x = 328,136.09