Illinois State Board of Investment, Chicago, authorized a $25 million commitment to Walton Street Real Estate Fund IV. The commitment will be funded over three or four years, said Scott Richards, the board's senior portfolio manager. Funding came from cash, said William Atwood, executive director. The move is part of the $8.3 billion plan's 8% target to real estate, now at slightly less than 7%. Real estate consultant Townsend assisted.