In cases other than those covered by Section 37-4-42, the question whether the proposed sale and conveyance or lease is consistent with the interests of the public shall be determined by the Public Service Commission, and if the commission determines that the proposed sale and conveyance or lease is consistent with the interests of the public, its determination shall be shown by its approval of the proposed sale and conveyance or lease. Thirty days' notice in a newspaper published in each municipality involved of such application shall be given before the hearing by the commission. If all, or substantially all, of the property and assets of any utility or corporation is proposed to be sold under the provisions of this division, the same procedure shall be necessary as in the case of other private corporations.