If parts of an original surveyed township or fractional township are situated in two or more counties, the amount of interest on common school fund due to such township shall be paid in the manner provided in sections 3315.27 and 3315.28 of the Revised Code to the county treasurer of the county wherein the greatest relative portion of such township is situated. If it is uncertain in which county such portion is situated, the amount of interest due to such township shall be paid to the county treasurer of the oldest county in which any part of the township is situated.