Finding the Fourth Proportional to 504,870.10, 756,610.50 and 216,336.34

Step by Step Solution

1. Step 1: Write the proportion equation
   504,870.10 : 756,610.50 = 216,336.34 : x
2. Step 2: Convert to fraction form
   504,870.10/756,610.50 = 216,336.34/x
3. Step 3: Cross multiply
   504,870.10x = 756,610.50 × 216,336.34
4. Step 4: Simplify right side
   504,870.10x = 163,682,345,016.31
5. Step 5: Solve for x
   x = 163,682,345,016.31/504,870.10
6. Step 6: Final answer
   x = 324,206.85