Answer: Amount to carry forward = $ 350,000

Working notes for the Above answer

In business if operating expenses on its tax return that is more then revenue  revenues, it said as net operating loss (NOL) has been created. It can be carry forward or carry back. for Carry the amount back to the preceding two tax years and apply it against any taxable income, and this will generate an immediate tax rebate.

In the present sum we have been provided with the information of the past 3 years but we can carry back it to 2 years and whatever remaining we can carry forward it to next year