Finding the Fourth Proportional to 99.37, 137.06 and 73.15

Step by Step Solution

1. Step 1: Write the proportion equation
   99.37 : 137.06 = 73.15 : x
2. Step 2: Convert to fraction form
   99.37/137.06 = 73.15/x
3. Step 3: Cross multiply
   99.37x = 137.06 × 73.15
4. Step 4: Simplify right side
   99.37x = 10,025.94
5. Step 5: Solve for x
   x = 10,025.94/99.37
6. Step 6: Final answer
   x = 100.90