Select c1.id, c1.monto,Sum(C2.Monto)as Acumulado, C1.FechaEmision, C1.Usuario, C1.NCF, C1.NroComprobante,C1.Cod_actuacion, C1.Tipo,C1.NumeroControl
from CTACTE C1
join CTACTE C2 on (C1.Monto > C2.Monto) or (C1.Monto = C2.Monto and C1.Cod_Cliente = C2.Cod_Cliente and C1.ID = C2.ID)
where c1.cod_cliente=1
Group By C1.FechaEmision, C1.Usuario, C1.NCF, C1.NroComprobante,C1.Cod_actuacion, c1.id ,C1.Tipo,C1.NumeroControl, c1.monto,C1.Id
Order by C1.id