Final answer:
The feature in Excel used to format cells based on certain criteria, such as being greater than a specified value, is Conditional Formatting.
Step-by-step explanation:
Automatically Formatting Cells in Excel
The Excel feature you would use to automatically format cells that are greater than a specified value with designated fill and text colors is Conditional Formatting. This feature allows you to apply a format to a cell or a range of cells based on certain criteria.
For example, if you want to highlight cells that contain a value greater than 100, you can set a conditional formatting rule that changes the fill color of these cells. To apply conditional formatting, you would typically select the cells you want to format, go to the 'Home' tab, select 'Conditional Formatting', choose 'Highlight Cells Rules', and then select 'Greater Than'. You would then input the value you want to compare the cells against and choose the desired formatting.