Finding the Fourth Proportional to 139.96, 193.04 and 90.82

Step by Step Solution

1. Step 1: Write the proportion equation
   139.96 : 193.04 = 90.82 : x
2. Step 2: Convert to fraction form
   139.96/193.04 = 90.82/x
3. Step 3: Cross multiply
   139.96x = 193.04 × 90.82
4. Step 4: Simplify right side
   139.96x = 17,531.89
5. Step 5: Solve for x
   x = 17,531.89/139.96
6. Step 6: Final answer
   x = 125.26