To balance the given chemical equation:

CaCl2 + CaCO3 + Ca(NO3)2 + HNO3 + KNO3 → ?

First, we need to break down the formulas into individual ions:

CaCl2 → Ca2+ + 2Cl-
CaCO3 → Ca2+ + CO32-
Ca(NO3)2 → Ca2+ + 2NO3-
HNO3 → H+ + NO3-
KNO3 → K+ + NO3-

Now we can balance the equation:

CaCl2 + CaCO3 + Ca(NO3)2 + 2HNO3 + KNO3 → Ca2+ + 2Cl- + Ca2+ + CO32- + Ca2+ + 2NO3- + 2H+ + 2NO3- + K+ + NO3-

The balanced equation is:

CaCl2 + CaCO3 + Ca(NO3)2 + 2HNO3 + KNO3 → 3Ca2+ + 2Cl- + CO32- + 3NO3- + 2H+ + K+