WIll an American akita be ok if left alone outside in garden for 78 hours a day?

You do realise that there are only twenty-four hours in a day, right? Generally, a dog shouldn't be left alone for more than four hours. My Labrador Retriever is seven months old and is left alone for four hours in the morning, then I will come home at lunchtime for an hour, then he will be left alone for another four hours before I finish work.