Finding the Fourth Proportional to 105.96, 146.15 and 70.98

Step by Step Solution

1. Step 1: Write the proportion equation
   105.96 : 146.15 = 70.98 : x
2. Step 2: Convert to fraction form
   105.96/146.15 = 70.98/x
3. Step 3: Cross multiply
   105.96x = 146.15 × 70.98
4. Step 4: Simplify right side
   105.96x = 10,373.73
5. Step 5: Solve for x
   x = 10,373.73/105.96
6. Step 6: Final answer
   x = 97.90