Finding the Fourth Proportional to 127.71, 191.10 and 100.37

Step by Step Solution

1. Step 1: Write the proportion equation
   127.71 : 191.10 = 100.37 : x
2. Step 2: Convert to fraction form
   127.71/191.10 = 100.37/x
3. Step 3: Cross multiply
   127.71x = 191.10 × 100.37
4. Step 4: Simplify right side
   127.71x = 19,180.71
5. Step 5: Solve for x
   x = 19,180.71/127.71
6. Step 6: Final answer
   x = 150.19