GCS transformation

I have a shape POSGAR 1994, I tested several reprojections and I cannot delete a displacement of about 100 meters with google earth. These are the shape data:

PROJCS["POSGAR_1994_Argentina_Zone_5",
GEOGCS["GCS_POSGAR_1994",
DATUM["D_POSGAR_1994",
SPHEROID["GRS_1980",6378137.0,298.257222101]],
PRIMEM["Greenwich",0.0],
UNIT["Degree",0.0174532925199433]],
PROJECTION["Transverse_Mercator"],
PARAMETER["False_Easting",5500000.0],
PARAMETER["False_Northing",0.0],
PARAMETER["Central_Meridian",-60.0],
PARAMETER["Scale_Factor",1.0],
PARAMETER["Latitude_Of_Origin",-90.0],
UNIT["Meter",1.0]]