Finding the Fourth Proportional to 109.60, 151.25 and 68.15

Step by Step Solution

1. Step 1: Write the proportion equation
   109.60 : 151.25 = 68.15 : x
2. Step 2: Convert to fraction form
   109.60/151.25 = 68.15/x
3. Step 3: Cross multiply
   109.60x = 151.25 × 68.15
4. Step 4: Simplify right side
   109.60x = 10,308.18
5. Step 5: Solve for x
   x = 10,308.18/109.60
6. Step 6: Final answer
   x = 94.06