how to leverage 401K fund to qualify for a loan?

[Pei Tang]

Currently have a primary residence, a vocation home/vocation rental and a rental property, and had a loan on each of these three properties. Would like to buy another rental property but debt/income ratio is too high and was told not qualify for another loan. Had a combined of approximate $140K equity in three properties, and had $70K in 401K. Also had $25k in saving account for downpayment. Wonder how to leverage the 401K balance to qualify for a loan to buy a $100K rental property. Will appreciate any suggestions you all can offer.