SOUTH AFRICA GDP UP 4.7 PCT IN 1986 LAST QUARTER The South African Reserve Bank, confirming previous estimates, said real gross domestic product in the 1986 fourth quarter grew at a seasonally adjusted annual rate of 4.7 pct versus 4.6 pct in the third quarter and 1.3 pct in the 1985 final quarter. The bank, in its latest quarterly review, said the nominal growth rate for the year did not quite reach one pct after a 1.5 pct contraction in 1985. But it said when the strengthening of the terms of trade is taken into account, the real GNP in 1986 advanced by 1.5 pct compared with a decrease of 0.5 pct in 1985. GDP is the total value of goods and services produced by an economy but omits income from abroad. GNP includes such payments or outflows. The bank also said there were indications the country's economic recovery was becoming more broadly based. With the exception of commerce all major sectors of the economy contributed to the fourth quarter rise in domestic production. The bank said major increases in foreign reserves were recorded in January, February and the first half of March 1987. Reserves rose by 1.70 billion rand during January and February. Total reserves in 1986 declined by 189 mln rand to 5.70 billion rand and were equivalent to about 14.5 pct of the total annual value of import payments. The current account surplus amounted to 7.20 billion rand in 1986 versus 5.90 mln the previous year. The bank said continuing strength of the current account has allowed foreign reserves to be "rebuilt to more comfortable levels." "This has strengthened the authorities' hands in lending support to the exchange rate of the rand if such action were to be called for," the bank said.