Final answer:
In Shakespeare's play 'Macbeth,' the witches predict that Banquo's descendants will inherit the throne, although Banquo himself will not be king.
Step-by-step explanation:
Based on the witches' prophecies in William Shakespeare's play Macbeth, it is Banquo who will somehow inherit the throne in the future. The witches hail Macbeth and Banquo, and while they predict that Macbeth shall be king, they also prophesy that Banquo's lineage will attain the throne. The witches state, "Thou shalt get kings, though thou be none," indicating that while Banquo himself will not be king, his descendants will. This prophecy fuels much of the play's plot, as Macbeth becomes obsessed with his potential royal future and the threat that Banquo and his heirs represent to that future.