In April 2018, who among these became the highest

23, 27, 39, 59, ?,  123

What will come in place of the question mark (?) in the following number series?

124, 131, 117, ?, 110, 145

18, 30, 46, 66, 90, ?

  5, 6, 14, 45, 184,  ?   

24, 42, 60, ?,  96, 114

What will come in place of the question mark (?) in the following series?

32, ?, 30, 46, 28, 44

9.3, 14.1, 20.1, 27.3, 35.7, ?

76, 80, 89, 105, ?, 166

What will come in place of the question mark (?) in the following series?

206, 187, ?, 157, 146, 139

What will come in place of the question mark (?) in the following series?

2, 5, 8, 29, 112, ?