This episode's headline: Balancing the Books; '92 - The Perot Appeal. The guests include REP. THOMAS FOLEY, Speaker of the House; RICHARD DARMAN, Budget Director; KENNETH LANGONE, Investment Banker; HENRY BLOCH, CEO, H&R Block; JACQUELYN JACKSON QUINN, Student; ELLEN GOODMAN, Syndicated Columnist; WILLIAM RASPBERRY, Syndicated Columnist. Byline: In New York: JUDY WOODRUFF; In Washington: JAMES LEHRER