Answer:
$76,840
Step-by-step explanation:
The computation of the addition to the retained earning is shown below;
But before that following calculations must be done
Earnings before interest and taxes (EBIT) is 
= Sales - Cost - Depreciation 
= $690,000 - $342,000 - $87,000 
= $261,000 
Now 
EBT = EBIT - Interest 
= $261,000 - $52,000 
= $209,000 
Now 
Net income = EBT × (1 - Tax) 
= $209,000 × (1 - 24%) 
= $158,840 
And finally 
Addition to retained earnings is 
= Net income - Dividends 
= $158,840 - $82,000 
= $76,840