Charge stored on the capacitors

In the circuit below, ε = 20.0 V, C1 = 6.80 μF, C2 = 5.20 μF, C3 = 2.40 μF, and C4 = 3.00 μF

http://www.flickr.com/photos/78341416@N0…

When all capacitors are fully charged, what is
(a) the charge stored on capacitor 1?
μC
(b) the charge stored on capacitor 2?
μC
(c) the charge stored on capacitor 3?
μC
(d) the charge stored on capacitor 4?
μC

The two in series are equivalent to 5.2•2.4/7.6 = 1.64 µF

Q = CV
for C1, Q = 20x8.8 = 176µC
for C4, Q = 20x3 = 60µC
for C2/3, Q = 20x1.64 = 32.8µC, and this is the charge on both caps.