<PAGE>
 

                                   SIGNATURES



          Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.



                                    ZAPATA CORPORATION



                                    By:    /s/ Joseph L. von Rosenberg III
                                       --------------------------------------
                                            Joseph L. von Rosenberg III
                                          Vice President, General Counsel
                                              and Corporate Secretary



Date:  March 31, 1995

                                       2