Finding the Fourth Proportional to 99.82, 137.72 and 60.48

Step by Step Solution

1. Step 1: Write the proportion equation
   99.82 : 137.72 = 60.48 : x
2. Step 2: Convert to fraction form
   99.82/137.72 = 60.48/x
3. Step 3: Cross multiply
   99.82x = 137.72 × 60.48
4. Step 4: Simplify right side
   99.82x = 8,329.31
5. Step 5: Solve for x
   x = 8,329.31/99.82
6. Step 6: Final answer
   x = 83.44