The lat and lon are actually 3d since we live, up to a first approximation, on the surface of a sphere. The correct way to think about it is xyz in a reference frame anchored in the center of the Earth

Altitude is the third dimension, but I presume you knew that.

"Geography is three dimensional" doesn't correctly communicate the time dimension.

I think the closest thing to the fourth dimension in this context is money. If used correctly, it alters ones experience meaningfully by altering what's in one's proximity.

For example, I could be living in a polluted region, but if I have sufficient money, I can ensure the air I breathe indoors is very clean and comfortable via aggressive filtration and air conditioning. I could also ensure I live by the water or near sufficient greenery.