Finding the Fourth Proportional to 99.58, 149.39 and 34.60

Step by Step Solution

1. Step 1: Write the proportion equation
   99.58 : 149.39 = 34.60 : x
2. Step 2: Convert to fraction form
   99.58/149.39 = 34.60/x
3. Step 3: Cross multiply
   99.58x = 149.39 × 34.60
4. Step 4: Simplify right side
   99.58x = 5,168.89
5. Step 5: Solve for x
   x = 5,168.89/99.58
6. Step 6: Final answer
   x = 51.91