Finding the Fourth Proportional to 317,510.82, 476,016.53 and 217,367.48

Step by Step Solution

1. Step 1: Write the proportion equation
   317,510.82 : 476,016.53 = 217,367.48 : x
2. Step 2: Convert to fraction form
   317,510.82/476,016.53 = 217,367.48/x
3. Step 3: Cross multiply
   317,510.82x = 476,016.53 × 217,367.48
4. Step 4: Simplify right side
   317,510.82x = 103,470,513,667.65
5. Step 5: Solve for x
   x = 103,470,513,667.65/317,510.82
6. Step 6: Final answer
   x = 325,880.28