Finding the Fourth Proportional to 99.76, 149.34 and 67.60

Step by Step Solution

1. Step 1: Write the proportion equation
   99.76 : 149.34 = 67.60 : x
2. Step 2: Convert to fraction form
   99.76/149.34 = 67.60/x
3. Step 3: Cross multiply
   99.76x = 149.34 × 67.60
4. Step 4: Simplify right side
   99.76x = 10,095.38
5. Step 5: Solve for x
   x = 10,095.38/99.76
6. Step 6: Final answer
   x = 101.20