Yes, using a dot for grouping is a common solution. But it seems to be fading out because of the conflict. Other solutions are a space (12 345,67) or apostroph

Yes, using a dot for grouping is a common solution. But it seems to be fading out because of the conflict. Other solutions are a space (12 345,67) or apostrophe also known as "highcomma" (12'345,67).