IRS penalty

We paid our 2016 taxes and have been negotiating with the IRS related to penalties and fines.  After paying an initial $34,000.00, an additional $13,800.00, another $507.00, they want interest and penalties for another $4000.00. After putting two daughters in nursing school and paying for truck repairs, we are tapped out. The interest continues to add up and we have met with a tax accountant but have no recourse under federal law. We were denied the appeal for abatement of penalties.  Any amount could help get us out from under this burden. Because at this point, being referred to US Tax Court will require an attorney. Thank you.