The first is fine (though I'd use among). I would rewrite the second as With 41,6 breast cancer diagnoses out of 100,000 women surveyed, Turkey is at the top of the list.
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BAYRAM ERDEMBreast cancer is the most commonly diagnosed form of cancer amongst women in the world.Correct.
BAYRAM ERDEMIn Turkey with 41,6 out of 100.000 women surveyed is found to be on the top/the most seen cancerNot so good. For one thing we interchange periods and commas in numbers here, so it's 41.6 out of 100,00