My front porch has developed cracks due to the ground settling beneath it. The widest section of the crack is hidden somewhat by bushes and wraps around to the front of the porch. I am looking for a way to fill this crack so that it does not keep increasing in size. I have tried using construction adhesive on the front, but it did not work. I would appreciate any ideas on how to fix this without having to replace the porch at this time.