Determine the Combination of GHC 20, GHC 50 notes and GHC 200 notes to make GHC 43,400

Divide the total amount by GH¢ 500 and take the integer part.

$$\text{Number of GH¢ 500 notes} = \left\lfloor \frac{43400}{500} \right\rfloor = 86$$ $$\text{Amount from GH¢ 500 notes} = 86 \times 500 = 43000$$ $$\text{Remaining amount} = 43400 - 43000 = 400$$

$$\text{Number of GH¢ 200 notes} = \left\lfloor \frac{400}{200} \right\rfloor = 2$$ $$\text{Amount from GH¢ 200 notes} = 2 \times 200 = 400$$ $$\text{Remaining amount} = 400 - 400 = 0$$

Since the remaining amount is GH¢ 0, no GH¢ 50 or GH¢ 20 notes are needed.

$$\text{Number of GH¢ 50 notes} = 0$$ $$\text{Number of GH¢ 20 notes} = 0$$

The combination is 86 notes of GH¢ 500, 2 notes of GH¢ 200, 0 notes of GH¢ 50, and 0 notes of GH¢ 20.
Verify the total: $86 \times 500 + 2 \times 200 + 0 \times 50 + 0 \times 20 = 43000 + 400 + 0 + 0 = 43400$.

The combination of notes is:

$$\boxed{\text{86 notes of GH¢ 500, 2 notes of GH¢ 200, 0 notes of GH¢ 50, 0 notes of GH¢ 20}}$$