Finding the Fourth Proportional to 105.91, 146.22 and 71.00

Step by Step Solution

1. Step 1: Write the proportion equation
   105.91 : 146.22 = 71.00 : x
2. Step 2: Convert to fraction form
   105.91/146.22 = 71.00/x
3. Step 3: Cross multiply
   105.91x = 146.22 × 71.00
4. Step 4: Simplify right side
   105.91x = 10,381.71
5. Step 5: Solve for x
   x = 10,381.71/105.91
6. Step 6: Final answer
   x = 98.02