Finding the Fourth Proportional to 99.37, 137.17 and 57.95

Step by Step Solution

1. Step 1: Write the proportion equation
   99.37 : 137.17 = 57.95 : x
2. Step 2: Convert to fraction form
   99.37/137.17 = 57.95/x
3. Step 3: Cross multiply
   99.37x = 137.17 × 57.95
4. Step 4: Simplify right side
   99.37x = 7,949.00
5. Step 5: Solve for x
   x = 7,949.00/99.37
6. Step 6: Final answer
   x = 79.99