The most recent financial statements for Alexander Co. are shown here: Income Statement Balance Sheet Sales $60,000 Current assets $93,960 Long-term debt $64,800 Costs 38,400 Fixed assets 51,840 Equity 81,000 Taxable income $21,600 Total $145,800 Total $145,800 Taxes (24%) 5,184 Net income $16,416 Assets and costs are proportional to sales. The company maintains a constant 26 percent dividend payout ratio and a constant debt-equity ratio. What is the maximum increase in sales that can be sustained assuming no new equity is issued?