RDA Holding Co., the publisher of Reader’s Digest magazine, won final court approval to borrow $105 million from a group of lenders while it reorganizes in bankruptcy protection, Bloomberg News reported yesterday. The debtor-in-possession loan arranged by a Wells Fargo & Co. unit was approved yesterday by Bankruptcy Judge Robert Drain. The 91-year-old publisher filed for chapter 11 protection on Feb. 17, the second such filing in four years, in a bid to shed debt as consumers shift to electronic media. The company had reached a restructuring deal with its secured lender and more than 70 percent of its secured noteholders to convert $465 million of senior notes into equity in the company.