Although there is no evidence in the record showing that Mathis gave express authority to A A to pay the additional amounts to Wausau for the commercial vehicle insurance, the evidence showing that Mathis accepted the benefit of the commercial vehicle insurance without directing A A to discontinue the coverage was sufficient to authorize a finding that Mathis, through acquiescence, conferred authority upon A A to pay Wausau the additional amounts charged for the insurance coverage. See Spalding Ins. Realty Co. v. Morris, 154 Ga. App. 869, 870 (1) ( 270 S.E.2d 78); Stevens v. Hunt, 61 Ga. App. 265 ( 6 S.E.2d 591). Consequently, since the undisputed evidence showed that A A paid $48,326 for the insurance coverages the trial court properly entered judgment in favor of A A in this amount.