Finding the Fourth Proportional to 100.82, 150.50 and 93.71

Step by Step Solution

1. Step 1: Write the proportion equation
   100.82 : 150.50 = 93.71 : x
2. Step 2: Convert to fraction form
   100.82/150.50 = 93.71/x
3. Step 3: Cross multiply
   100.82x = 150.50 × 93.71
4. Step 4: Simplify right side
   100.82x = 14,102.13
5. Step 5: Solve for x
   x = 14,102.13/100.82
6. Step 6: Final answer
   x = 139.88