Solution:
Percentage Break-up of expenditure is:
$$\eqalign{
& \text{Investments →} \left(\frac{54}{360}\times100\right)\% \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 15\% \cr
& \text{Commuting →} \left(\frac{79.2}{360}\times100\right)\% \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 22\% \cr
& \text{Shopping →} \left(\frac{68.4}{360}\times100\right)\% \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 19\% \cr
& \text{Groceries →} \left(\frac{82.8}{360}\times100\right)\% \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 23\% \cr
& \text{Medicines →} \left(\frac{39.6}{360}\times100\right)\% \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 11\% \cr
& \text{Entertainment →} \left(\frac{36} {360}\times100\right)\% \cr
& \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\, = 10\% \cr} $$
Amount spent on Groceries, Entertainment and Investments
$$\eqalign{
& = 45800\times\frac{23+10+15}{100} \cr
& = 45800\times\frac{48}{100} \cr
& \text{Amount spent on Commuting} \cr
& = 45800\times\frac{22}{100} \cr
& \text{Required %} \cr
& = \left(\frac{45800\times\frac{48}{100}}{45800\times\frac{22}{100}}\times100\right)\% \cr
& = \frac{2400}{11}\% \cr
& = 218.18\% \cr
& \approx 218\% \cr} $$
