For my story on the site today, I valued more than 60 private companies to come up with a list of fifty of the most valuable ones. Here’s how I did it. It’s not hard to quickly value a company. You just look up the industry multiple (ie, the going rate for a euro of profit in that industry), multiply that times Ebitda, and you have your number. But valuing a company that way misses out on an awful lot. In no particular order, here are important things an industry multiple doesn’t explicitly capture. Who’s buying the target company? If…