4. The most recent financial statements for Heng Co. are shown below:

Income Statement Balance Sheet Sales $46,000 Current Assets $ 24,000 Current Liab. $ 51,000 Costs 29,500 Fixed assets 92,000 ------- Equity 65,000 Taxable income $16,500 -------- -------- Taxes (40%) 5,610 $116,000 $116,000 ------- ======== ======== Net Income $10,890 ======= Assets and costs are proportional to sales. The company maintains a constant 30% 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?