In three years time, a considerable number of the plant and machinery in your companys factory will need replacement. As the finance director of your company, you have estimated the amount of money that will be required for purchasing the replacements to be GHS280,000. Your company has decided to invest GHS10,000 at the end of every quarter at the 20% per annum compounded quarterly. The additional sum needed to be set aside now in order to provide the GHS280,000 at the end of the three years is?