1. The problem is to find the sum of the numbers: 34900, 52350, 69800, 87250, 104700, 122150, 132620, 139600, 139600, 174500, 191950, 209400. 2. To add these numbers, we use the addition operation which combines values to get a total sum. 3. Adding step-by-step: $$34900 + 52350 = 87250$$ $$87250 + 69800 = 157050$$ $$157050 + 87250 = 244300$$ $$244300 + 104700 = 349000$$ $$349000 + 122150 = 471150$$ $$471150 + 132620 = 603770$$ $$603770 + 139600 = 743370$$ $$743370 + 139600 = 882970$$ $$882970 + 174500 = 1057470$$ $$1057470 + 191950 = 1249420$$ $$1249420 + 209400 = 1458820$$ 4. Therefore, the total sum of the given numbers is: $$\boxed{1458820}$$