Your question might be broadened to:
How could random events (or elements) produce harmony, symmetry, and proportion, PER SE?
True, propagations and rebirths (micro-ToE events) should aide somewhat in maintaining these excellencies on biological levels as per your ToE speculators.
But speaking PER SE on cosmic excellencies of symmetry, harmony, and proportion does beg (strongly infer) awesome design (ID) to be sure, so that it seems pointless to argue the matter.
Most of us infer that a potter fashions the pottery, an artist the painting, etc. How much more might I (we) infer an excellent universe, quantum chemical science, life-form, and/or person to be directly fashioned by an awesome Maker.
Albeit doubts and fears must always taunt me (us) in this matter. A real curse of sin and blindness in my (our) mind(s) which repeatedly refuses to acknowledge the glorious truth of cosmic design.