Provena Foods Inc.: The Santa Ana specialty food processor posted earnings of $922,445 for 1990. Last year, the company reported earnings of $1.1 million, which included a one-time gain of $862,044 from the sale of a building. Sales rose 23% to $42.2 million from $34.3 million. For the fourth quarter, earnings totaled $308,279, contrasted with $899,692 for the 1989 fourth quarter. Sales were up 23% to $11.1 million from $9 million.