Different values of concentration of product at equilibrium


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> $\pu{60g}$ of acetic acid and $\pu{46g}$ of ethyl alcohol are mixed with each other at a constant temperature and allowed to attain equilibrium. At equilibrium $\pu{58.2g}$ of ethylacetate and $\pu{12g}$ of water were present: find the concentration equilibrium constant ($K\_\mathrm{c}$)
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**Here is my solution:**


[![enter image description here](https://i.stack.imgur.com/3MQuW.jpg)](https://i.stack.imgur.com/3MQuW.jpg)


The correct answer is 4 but I'm getting 3.7 something. When I calculate x with the help of made of water it is slightly different than when I do it with the mass of ester. Shouldn't they both give the same answer? If not, which substance should I use?


