To develop this problem, we will apply the concepts related to the Indian electric field from Coulomb's law. According to the values given we have to the electric field is

Distance from the center of the ball to the point of consideration is


Now the electric field strength is

Here,
k = Coulomb's Constant
q = Charge
r = Distance
Rearrange to find the charge,

Replacing,



Therefore the charge on the ball is 56.194nC