Finding the Fourth Proportional to 99.42, 137.22 and 67.93

Step by Step Solution

1. Step 1: Write the proportion equation
   99.42 : 137.22 = 67.93 : x
2. Step 2: Convert to fraction form
   99.42/137.22 = 67.93/x
3. Step 3: Cross multiply
   99.42x = 137.22 × 67.93
4. Step 4: Simplify right side
   99.42x = 9,321.35
5. Step 5: Solve for x
   x = 9,321.35/99.42
6. Step 6: Final answer
   x = 93.76