Finding the Fourth Proportional to 100.82, 151.23 and 35.80

Step by Step Solution

1. Step 1: Write the proportion equation
   100.82 : 151.23 = 35.80 : x
2. Step 2: Convert to fraction form
   100.82/151.23 = 35.80/x
3. Step 3: Cross multiply
   100.82x = 151.23 × 35.80
4. Step 4: Simplify right side
   100.82x = 5,414.22
5. Step 5: Solve for x
   x = 5,414.22/100.82
6. Step 6: Final answer
   x = 53.70