Finding the Fourth Proportional to 99.58, 149.23 and 67.03

Step by Step Solution

1. Step 1: Write the proportion equation
   99.58 : 149.23 = 67.03 : x
2. Step 2: Convert to fraction form
   99.58/149.23 = 67.03/x
3. Step 3: Cross multiply
   99.58x = 149.23 × 67.03
4. Step 4: Simplify right side
   99.58x = 10,002.89
5. Step 5: Solve for x
   x = 10,002.89/99.58
6. Step 6: Final answer
   x = 100.45