Finding the Fourth Proportional to 94.86, 141.30 and 90.18

Step by Step Solution

1. Step 1: Write the proportion equation
   94.86 : 141.30 = 90.18 : x
2. Step 2: Convert to fraction form
   94.86/141.30 = 90.18/x
3. Step 3: Cross multiply
   94.86x = 141.30 × 90.18
4. Step 4: Simplify right side
   94.86x = 12,742.43
5. Step 5: Solve for x
   x = 12,742.43/94.86
6. Step 6: Final answer
   x = 134.33