If the total amount of inheritance is X francs, the boss will get100+(x-100) ×110; Second child's score: 200+(x-[100+110 (x-100)]-200) ×10,

100+ 1 10(x- 100)= 200+ 1 10 { x-[ 100+ 1 10(x- 100)]-200 }，

Solution: x = 8 100.

That is, the father's total inheritance is 8 100 Swiss francs.

So the answer is: 8 100.