। ॥ ४५२ ॥
In plain words
The worlds called gross, subtle and causal — the three we have been laying out — all of them, put together, come to one. One single vast prapañca, and nothing more.
Close to the Sanskrit
Those manifest worlds which, named gross, subtle and causal, have been set out — all of those too, having come together, would be one single great manifest world.