Finding the Fourth Proportional to 99.73, 149.52 and 38.91

Step by Step Solution

1. Step 1: Write the proportion equation
   99.73 : 149.52 = 38.91 : x
2. Step 2: Convert to fraction form
   99.73/149.52 = 38.91/x
3. Step 3: Cross multiply
   99.73x = 149.52 × 38.91
4. Step 4: Simplify right side
   99.73x = 5,817.16
5. Step 5: Solve for x
   x = 5,817.16/99.73
6. Step 6: Final answer
   x = 58.33