Question 1165269
10% of $4,500,000 is  $450,000 (Performance Bonus)
$450,000-$70,000(for the staff) =$380,000 left
Alan will get =$80,000
Barbara will get =$80,000 
Chuck will get =$80,000

WE only now have $140,000 to be divided by their portion share.
Let:
4000x-be alan's share
3000x-be barbara's share 
1000x-be chuck's share 

4000x+3000x+1000x=140000
8000x=140000
x=17.5

Therefore:
Alan will get - $80,000 and (4000x=$70,000)
Allan =$150,000
Barbara will get - $80,000 and (3000x=$52,500)
Barbara=$132,500
Chuck will get - $80,000 and (1000x=$17,500)
Chuck=$97,500

Hope that helps!