The supreme administrator and steward of to all ecclesiastical temporalities is the Pope, in virtue of his primacy of governance.
The pope's power in this connection is solely administrative, as he cannot be said properly to be the owner of goods belonging either to the Church or to particular churches. Papal administrative authority is exercised principally through the Congregations of the Roman Curia and similar bodies
What follows is taken from the 1913 Catholic Encyclopedia. With the coming into force of the Code of Canon Law in 1917 and its revision in 1983, the provisions of canon law have in some points been changed. What is here needs therefore to be rewritten either by an expert in canon law or by someone who has at his or her disposal the time required to extract the necessary information from canons 1273-1289 of the Code of Canon Law and sources such as this commentary on the Code of Canon Law