Finding the Fourth Proportional to 100.94, 151.27 and 90.10

Step by Step Solution

1. Step 1: Write the proportion equation
   100.94 : 151.27 = 90.10 : x
2. Step 2: Convert to fraction form
   100.94/151.27 = 90.10/x
3. Step 3: Cross multiply
   100.94x = 151.27 × 90.10
4. Step 4: Simplify right side
   100.94x = 13,629.43
5. Step 5: Solve for x
   x = 13,629.43/100.94
6. Step 6: Final answer
   x = 135.03