Compositional share in 2018:

• Sales of Product X in 2018 $= 40,020\text{ kg}$.
• Sales of Product Y in 2018 $= 75,070\text{ kg}$.
• Total sales of both products in 2018:
  $\text{Total} = 40,020 + 75,070 = 115,090\text{ kg}$.
• Share of Product X:
  $\text{Percentage} = \frac{40,020}{115,090} \times 100 = 34.7728\% \approx 34.77\%$.

Revenue forecast based on multi-year average:

• Annual sales of Product Y from 2015 to 2020:
  2015: $55,790\text{ kg}$
  2016: $65,770\text{ kg}$
  2017: $67,060\text{ kg}$
  2018: $75,070\text{ kg}$
  2019: $85,060\text{ kg}$
  2020: $90,300\text{ kg}$
  Total sales of Y $= 55,790 + 65,770 + 67,060 + 75,070 + 85,060 + 90,300 = 439,050\text{ kg}$.
• Six-year average sales of Product Y:
  $\text{Average} = \frac{439,050}{6} = 73,175\text{ kg}$.
• Revenue at Rs. 26 per kg:
  $\text{Revenue} = 73,175 \times 26 = \text{Rs. } 1,902,550$.

Benchmark threshold evaluation:

• Six-year average sales of Product Y $= 73,175\text{ kg}$.
• 45 percent threshold value:
  $\text{Threshold} = 0.45 \times 73,175 = 32,928.75\text{ kg}$.
• Comparison with Product X annual sales:
  2015: $23,230\text{ kg}$ ($\lt 32,928.75$)
  2016: $32,230\text{ kg}$ ($\lt 32,928.75$)
  2017: $33,450\text{ kg}$ ($\gt 32,928.75$) - [Year 1]
  2018: $40,020\text{ kg}$ ($\gt 32,928.75$) - [Year 2]
  2019: $45,040\text{ kg}$ ($\gt 32,928.75$) - [Year 3]
  2020: $50,220\text{ kg}$ ($\gt 32,928.75$) - [Year 4]
  Sales of Product X exceeded the threshold in exactly 4 years (2017, 2018, 2019, 2020).