The court, in its discretion at the time of the appointment or subsequently, may require the personal representative to execute and file a bond to assure the faithful performance of the duties required. An accounting by the personal representative shall be made within such period of time as shall be established by rule of the supreme court and either the court or the county department of social welfare may require additional accountings at such intervals as it considers necessary. Failure to render such accounts and to account satisfactorily for all proceeds received shall be sufficient cause for the dismissal of the personal representative, and the personal representative so appointed may be removed by the court upon the petition of such representative and another representative appointed.