Berean Study Bible
The four horns that replaced the broken one represent four kingdoms that will rise from that nation, but will not have the same power.

King James Bible
Now that being broken, whereas four stood up for it, four kingdoms shall stand up out of the nation, but not in his power.

American Standard Version
And as for that which was broken, in the place whereof four stood up, four kingdoms shall stand up out of the nation, but not with his power.

Darby Bible Translation
Now that being broken, whereas four stood up in its stead, four kingdoms shall stand up out of the nation, but not with his power.

Douay-Rheims Bible
But whereas when that was broken, there arose up four for it: four kings shall rise up of his nation, but not with his strength.

English Revised Version
And as for that which was broken, in the place whereof four stood up, four kingdoms shall stand up out of the nation, but not with his power.

Young's Literal Translation
and that being broken, stand up do four in its place, four kingdoms from the nation do stand up, and not in its power.