Williamson Industries has $4 billion in sales and $2.040 billion in fixed assets. Currently, the company's fixed assets are operating at 90% of capacity. a. What level of sales could Williamson Industries have obtained if it had been operating at full capacity? Enter your answer in billions of dollars. Round your answer to five decimal places. billion $ b. What is Williamson's target fixed assets/sales ratio? Do not round intermediate calculations. Round your answer to two decimal places. % c. If Williamson's sales increase 12%, how large of an increase in fixed assets will the company need to meet its target fixed assets/sales ratio? Enter your answer in billions of dollars. Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to five decimal places. billion $