By Rodrigo Campos | NEW YORK NEW YORK The Nasdaq Composite hit a record high on Tuesday, while the Dow and S&P 500 brushed against recent peaks as strong earnings underscored the health of corporate America.Caterpillar (CAT) was up 7.7 percent at $104.29 after earlier hitting a multi-year high of $104.71 and McDonald's (MCD) jumped 5.6 percent to $141.72, both after beating profit estimates."It?s earnings coming from the Dow companies, the largest of the large, in particular Caterpillar, really driving on the theme that U.S. corporate profitability is on track to provide some significant year-over-year earnings growth