Answer:
$78 million
Explanation:
Data given in the question
Operating loss = $78 million
Estimated operating loss = $97 million
Excess of fair value, less costs to sell, over book value = $17 million
So, by considering the above information, the before-tax loss on discontinued operations is $78 million because the fair value is exceeded from the book value i.e $17 million. Moreover, the asset is also not impaired. So only operating loss would be reported