Verified answer

The Force due to Gravity is Found using This Equation

g=(GM)/r^2)

where g is the force of gravity

G is a gravitational Constant=6.67x10^-11

and r is the distance from the centre of the earth.

M is the mass of the earth, but because of certain circumstances im not going to describe, it is not needed here.

The earth has a radius of 6378100m

the satellites are 4.61x10^8m above the earth, so add that to the radius to find the distance from the centre of the earth.

which gives you 467378100m

so r=467378100

G=6.67*10-11

So G/r= 1.42711008x10-19

Which is perfectly reasonable for a satelitte of that distance away.