Finding the Fourth Proportional to 808,196.50, 1,115,412.42 and 464,140.36

Step by Step Solution

1. Step 1: Write the proportion equation
   808,196.50 : 1,115,412.42 = 464,140.36 : x
2. Step 2: Convert to fraction form
   808,196.50/1,115,412.42 = 464,140.36/x
3. Step 3: Cross multiply
   808,196.50x = 1,115,412.42 × 464,140.36
4. Step 4: Simplify right side
   808,196.50x = 517,707,922,167.27
5. Step 5: Solve for x
   x = 517,707,922,167.27/808,196.50
6. Step 6: Final answer
   x = 640,571.84