A Middleton man missing for most of the week in Valley County has been found and appears to be in good condition.  Roderick Sproat went missing Tuesday after the horse he was riding went over an embankment near Yellowpine. Search crews located his horse's saddle and other items on Thursday and found his horse on Friday, but could not locate the 64-year-old.  A group of people riding ATVs found Sproat in the Quartz Creek area on Saturday.  Valley County Search and Rescue, the Valley County Sheriff's Office, the Forest Service, and Idaho Air National Guard all helped out with the search.