Finding the Fourth Proportional to 127.25, 191.58 and 99.98

Step by Step Solution

1. Step 1: Write the proportion equation
   127.25 : 191.58 = 99.98 : x
2. Step 2: Convert to fraction form
   127.25/191.58 = 99.98/x
3. Step 3: Cross multiply
   127.25x = 191.58 × 99.98
4. Step 4: Simplify right side
   127.25x = 19,154.17
5. Step 5: Solve for x
   x = 19,154.17/127.25
6. Step 6: Final answer
   x = 150.52