Finding the Fourth Proportional to 99.59, 149.39 and 38.71

Step by Step Solution

1. Step 1: Write the proportion equation
   99.59 : 149.39 = 38.71 : x
2. Step 2: Convert to fraction form
   99.59/149.39 = 38.71/x
3. Step 3: Cross multiply
   99.59x = 149.39 × 38.71
4. Step 4: Simplify right side
   99.59x = 5,782.69
5. Step 5: Solve for x
   x = 5,782.69/99.59
6. Step 6: Final answer
   x = 58.07