Markets gain for fourth straight day: Benchmark indices ended higher led by Reliance after it hit upon a very significant gas discovery in the MJ-1 field of the KG-D6 basin and is estimated to hold about 1.4 trillion cubic feet of gas resources (tcfe). Strength in the Asian peers boosted the sentiments. The Sensex gained 191.16 points at 28707.75 and the Nifty rose 54.10 points to 8714.40. The rupee is trading down four paise at 62.30 against the US dollar today at the Interbank Foreign Exchange. Increased demand for the dollar from importers also weighed on the local currency but the positive trend in domestic equity market limited the rupee’s losses.