Mumbai, March 5 -- The Indian rupee appreciated by 19 paise to close at 87.00 (provisional) against the US dollar on Wednesday on sharp pullback in domestic equities, a weak American currency and a decline in crude oil prices. As per provisional closing, the barometer index, the S&P BSE Sensex, rallied 740.30 points or 1.01% to 73,730.23. The Nifty 50 index added 254.65 points or 1.15% to 22,337.30. US President Donald Trump's tariff escalation has set off a chain reaction in global markets, sending the dollar into a downward spiral. The US dollar incurred further sharp losses on Wednesday and slumped to its lowest level in nearly four months amid uncertainty over US growth prospects. The dollar index that measures the greenback against a...