Finding the Fourth Proportional to 99.99, 137.89 and 67.27

Step by Step Solution

1. Step 1: Write the proportion equation
   99.99 : 137.89 = 67.27 : x
2. Step 2: Convert to fraction form
   99.99/137.89 = 67.27/x
3. Step 3: Cross multiply
   99.99x = 137.89 × 67.27
4. Step 4: Simplify right side
   99.99x = 9,275.86
5. Step 5: Solve for x
   x = 9,275.86/99.99
6. Step 6: Final answer
   x = 92.77