Finding the Fourth Proportional to 99.83, 149.97 and 71.01

Step by Step Solution

1. Step 1: Write the proportion equation
   99.83 : 149.97 = 71.01 : x
2. Step 2: Convert to fraction form
   99.83/149.97 = 71.01/x
3. Step 3: Cross multiply
   99.83x = 149.97 × 71.01
4. Step 4: Simplify right side
   99.83x = 10,648.26
5. Step 5: Solve for x
   x = 10,648.26/99.83
6. Step 6: Final answer
   x = 106.67