Hello Satish,
Here is a piece of code cut from my commercial product.
Hope this helps.

//==============================================================
//This usually goes into header file
//==============================================================
union FloatToByte
{
float FloatData;
Byte FToB[4];
};
//==============================================================
//This is usually placed on top of the source file
//==============================================================
union FloatToByte EeFloat;
//==============================================================
void WriteEepromFloat(float FourDigitNumber, Word Address)
{
EeFloat.FloatData=FourDigitNumber;
WriteEepromByte(EeFloat.FToB[0],Address);
WriteEepromByte(EeFloat.FToB[1],Address+1);
WriteEepromByte(EeFloat.FToB[2],Address+2);
WriteEepromByte(EeFloat.FToB[3],Address+3);
}
//==============================================================
float ReadEepromFloat(Word Address)
{
EeFloat.FToB[0]=ReadEepromByte(Address);
EeFloat.FToB[1]=ReadEepromByte(Address+1);
EeFloat.FToB[2]=ReadEepromByte(Address+2);
EeFloat.FToB[3]=ReadEepromByte(Address+3);
return(EeFloat.FloatData);
}
//==============================================================

Regards,
John.