Finding the Fourth Proportional to 404,716.66, 559,005.72 and 303,196.12

Step by Step Solution

1. Step 1: Write the proportion equation
   404,716.66 : 559,005.72 = 303,196.12 : x
2. Step 2: Convert to fraction form
   404,716.66/559,005.72 = 303,196.12/x
3. Step 3: Cross multiply
   404,716.66x = 559,005.72 × 303,196.12
4. Step 4: Simplify right side
   404,716.66x = 169,488,365,361.81
5. Step 5: Solve for x
   x = 169,488,365,361.81/404,716.66
6. Step 6: Final answer
   x = 418,782.77