PILING INTO CENTRAL EUROPE.

The article reports on the increase in foreign investments in Eastern Europe. Inflation has tapered off, once-gyrating currencies are now stable, output is rising at a brisk pace, and unemployment has leveled off. Poland's gross domestic product increased by 7 percent in 1995, rivaling Taiwan's 6 percent and Indonesia's 8.1 percent. This year, Poland and the Czech Republic are forecast to expand by 5.5 percent, placing them among Europe's most robust economies. The clearest sign of this stability is a wave of foreign investment in everything from auto assembly to retailing. Direct foreign investment in Poland, Hungary, and the Czech Republic doubled in 1995, bringing the total since 1990 to $23.5 billion. Cumulative investment is expected to jump an additional 29 percent, to $30.4 billion by yearend. INSET: A flood of foreign investment..