Hackintosh Yosemite Installer can be used to install OS X Yosemite On PC without the need of a Mac.
For detail Installation Guide and Instruction read: Install Hackintosh Yosemite on PC/Laptop
This Installer supports
Apple Inc has been released Yosemite operating system to the Mac device users as an improvement and bug fix version. In this version, Apple Inc has especially enhanced the stability, compatibility, and security of the Mac device. So each Mac device user can enjoy a lot with Download Yosemite 10.10.5 dmg version.
Use the DMG for Flash drive installation and use ISO for DVD Installation or Installing on a Virtual Machines.