To type the symbol that represents "to the fourth power", you have to reference your specific system's instructions on accessing the font formats. Format the font for the number 4 as a subscript. This symbol is the number 4 in bold.Continue Reading
Systems vary as to the specific process for changing the font to subscript.
Go to the Format menu and choose the Font option to access style options.
From the fonts, select the Subscript style. The subscript style will bold the number four to signify "to the fourth power".