Finding the Fourth Proportional to 127.46, 190.69 and 100.13

Step by Step Solution

1. Step 1: Write the proportion equation
   127.46 : 190.69 = 100.13 : x
2. Step 2: Convert to fraction form
   127.46/190.69 = 100.13/x
3. Step 3: Cross multiply
   127.46x = 190.69 × 100.13
4. Step 4: Simplify right side
   127.46x = 19,092.59
5. Step 5: Solve for x
   x = 19,092.59/127.46
6. Step 6: Final answer
   x = 149.79