I am not able to print multiple currency on receipt it's showing with "NaNa" on receipt.

When multiple currency configured in property and on receipt it's not printing check receipt template and follow below mention steps.

1) Switch to Back

2) Select printing template from Setting tab

3) Click on Configuration tab for that receipt template.

4) Select Detail Footer and add {basecurrencysign} field and click on Edit button

5) Once you click on Edit button to save receipt template it will be reflect on that Currency as well on receipt template.