(1)0.59×4-4.56÷6 =2.36-0.76=1.6;(2)14.3÷( 7.3×1.4-4.72)=14.3÷(10.22-4.72)=14.3÷5.5=2.6;(3)101×7.2 =(100+1)×7.2=100×7.2+7.2=727.2;(4)13.6×4.8+13.6×4.2+13.6=13.6×(4.8+4.2+1)=13.6×10=136.