Finding the Fourth Proportional to 99.71, 149.34 and 74.07

Step by Step Solution

1. Step 1: Write the proportion equation
   99.71 : 149.34 = 74.07 : x
2. Step 2: Convert to fraction form
   99.71/149.34 = 74.07/x
3. Step 3: Cross multiply
   99.71x = 149.34 × 74.07
4. Step 4: Simplify right side
   99.71x = 11,061.89
5. Step 5: Solve for x
   x = 11,061.89/99.71
6. Step 6: Final answer
   x = 110.94