Finding the Fourth Proportional to 308.25, 462.38 and 91.82

Step by Step Solution

1. Step 1: Write the proportion equation
   308.25 : 462.38 = 91.82 : x
2. Step 2: Convert to fraction form
   308.25/462.38 = 91.82/x
3. Step 3: Cross multiply
   308.25x = 462.38 × 91.82
4. Step 4: Simplify right side
   308.25x = 42,456.43
5. Step 5: Solve for x
   x = 42,456.43/308.25
6. Step 6: Final answer
   x = 137.73