Completion of decedent‘s contract to purchase real estate.) (a) When a decedent has contracted to purchase real estate and the payment therefor has not been completed, the representative may file a petition in the court which issued his letters asking for leave to complete the payment therefor or for directions as to the manner in which he may proceed with respect to the real estate. The court may authorize the payment out of the estate of the decedent in the name of the representative or the persons entitled to the estate, or may direct the representative as to the manner in which he shall deal with the real estate. This Section does not supersede the provisions of the will of the decedent or the rights of the vendor under the contract of sale.
     (b) The petition must state a description of the real estate involved, the nature of the improvements thereon, if any, an estimate of the value of the real estate and the amount unpaid on the purchase price thereof. Notice of the time and place of the hearing on the petition must be given as the court directs or the court may hear the petition without notice if it finds that notice is not required to be given to any interested person to protect his interests.