Your focus on Gold "must" go up due to future hyperinflation mayb be correct but you are not looking at the reason such a thing would happen. Demand. There could be a bump up, but gold is only going to store if it is choosen to act as a reserve currency, or as a primary component in a basket of things acting as a new reserve currency. That may happen at some point, but it will be because of a "rule" change by central bankers. So calculating the time requires making a judgement and when and how those rules would be changed.
Is Hyperinflation on the Horizon? [View article]