Finding the Fourth Proportional to 101.34, 151.83 and 90.62

Step by Step Solution

1. Step 1: Write the proportion equation
   101.34 : 151.83 = 90.62 : x
2. Step 2: Convert to fraction form
   101.34/151.83 = 90.62/x
3. Step 3: Cross multiply
   101.34x = 151.83 × 90.62
4. Step 4: Simplify right side
   101.34x = 13,758.83
5. Step 5: Solve for x
   x = 13,758.83/101.34
6. Step 6: Final answer
   x = 135.77