Section 281 - Mileage and actual valuation1. The mileage of highways in towns to be used in determining the amounts to be paid to such towns under the provisions of this article shall be the tables of mileage heretofore prepared by the state engineer, until the corrected tables of mileage prepared as provided in section ten of this chapter are filed. Such tables and all corrections thereof shall be filed in the department of transportation and with the comptroller. The actual valuation of real property to be used in determining such amounts shall be the full valuation thereof, according to the latest table of percentages of assessments as fixed and determined by the commissioner of taxation and finance.2. The actual valuation shall be determined by applying the percentages contained in the latest table of percentages of assessments as fixed and determined by the state tax commission, to the assessed valuations of the several towns as they appear on the statement of the clerk of the board of supervisors for the year prior to the levy of taxes upon which is based the amounts to be paid as provided in section two hundred and seventy-nine.