Finding the Fourth Proportional to 100.82, 151.18 and 35.81

Step by Step Solution

1. Step 1: Write the proportion equation
   100.82 : 151.18 = 35.81 : x
2. Step 2: Convert to fraction form
   100.82/151.18 = 35.81/x
3. Step 3: Cross multiply
   100.82x = 151.18 × 35.81
4. Step 4: Simplify right side
   100.82x = 5,413.58
5. Step 5: Solve for x
   x = 5,413.58/100.82
6. Step 6: Final answer
   x = 53.70