Finding the Fourth Proportional to 716,530.38, 1,074,756.69 and 217,855.50

Step by Step Solution

1. Step 1: Write the proportion equation
   716,530.38 : 1,074,756.69 = 217,855.50 : x
2. Step 2: Convert to fraction form
   716,530.38/1,074,756.69 = 217,855.50/x
3. Step 3: Cross multiply
   716,530.38x = 1,074,756.69 × 217,855.50
4. Step 4: Simplify right side
   716,530.38x = 234,141,656,078.30
5. Step 5: Solve for x
   x = 234,141,656,078.30/716,530.38
6. Step 6: Final answer
   x = 326,771.43