Use "preposterousness" in a sentence

1. Roidon laughed, as if small child had said it: the utter preposterousness

2. I shrugged and the preposterousness of his proposals, and yet I knew

3. The preposterousness of the notion that he could at once set up a satisfactory establishment as a married man was a sufficient guarantee against danger

4. In this instance, I was struck not only by the article's potential as a contrary indicator, but also by the utter preposterousness of its assertion