Being led by the Holy Spirit venture out in faith with your prayer. When you know that a thing is the will of God, move our in prayer with it.
Do not mind if this is humanly impossible, or at least highly improbable. Lay hold of God for this in prayer.
Give yourself wholly to it. Pray without ceasing for it. Then stand back and see the answer come. Others have done this and have seen the miraculous intervention of God.