liability of employers on termination of plan maintained by more than one employer

liability of employers on termination of plan maintained by more than one employer Sec. 4064. (a) This section applies to all employers who maintain a plan under which more than one employer makes contributions at the time such plan is terminated, or who, at any time within the 5 plan years preceding the date of termination, made contributions under the plan. (b) The corporation shall determine the liability of each such employer in a manner consistent with section 4062 except that the amount of the liability determined under section 4062(b)(1) with respect to the entire plan shall be allocated to each employer by multiplying such amounts by a fraction— (1) the numerator of which is the amount required to be contributed to the plan by each employer for the last 5 plan years ending prior to the termination, and (2) the denominator of which is the total amount required to be contributed to the plan by all such employers for such last 5 years, and the limitation described in section 4062(b)(2) shall be applied separately to each employer. The corporation may also determine the liability of each such employer on any other equitable basis prescribed by the corporation in regulations.