Align Numbers with Decimal Tabs
The Problem:
I need to get columns of numbers aligned on a decimal point. Tabs aren't much use, because I have to put just the right amount of spaces after them to get the alignment right.
The Solution:
Use a decimal taba tab that aligns figures on a decimal point. You can set a decimal tab by using either the Tabs button on the ruler or the Tabs dialog box (Format 
Tabs).
Tip: To lay out extra-wide tabular data, you can set tabs beyond the left and right margins of a page.