Sunnyvale, Calif.--Yahoo! Inc., the troubled portal company, reported a $24.1 million fiscal fourth-quarter net loss, compared with net income of $47.7 million in the year-earlier period. The loss met analysts' expectations. Yahoo! is increasing its b-to-b focus to counter the struggles of its business-to-consumer operations. Last month, it began a Web broadcasting push, developing and marketing software for the virtual conference and executive communication marketplaces. Yahoo!'s shares are trading in the $8 to $11 range, off a 52-week high of $88.75.