Finding the Fourth Proportional to 127.98, 191.98 and 100.96

Step by Step Solution

1. Step 1: Write the proportion equation
   127.98 : 191.98 = 100.96 : x
2. Step 2: Convert to fraction form
   127.98/191.98 = 100.96/x
3. Step 3: Cross multiply
   127.98x = 191.98 × 100.96
4. Step 4: Simplify right side
   127.98x = 19,382.30
5. Step 5: Solve for x
   x = 19,382.30/127.98
6. Step 6: Final answer
   x = 151.45