LOS ANGELES — Marvel’s first family has finally found box office gold. “The Fantastic Four: First Steps,” the first film about the superheroes made under the guidance of Kevin Feige and the Walt Disney Co., earned $118 million in its first weekend in 4,125 North American theaters, according to studio estimates Sunday.

“ The Fantastic Four: First Steps ” is off on the right foot at the box office. Marvel ‘s latest comic book adaptation has lifted off with $118 million from 4,125 North American theaters over the weekend. Those ticket sales were slightly ahead of expectations of $100 million to $110 million.