Finding the Fourth Proportional to 127.86, 191.82 and 109.98

Step by Step Solution

1. Step 1: Write the proportion equation
   127.86 : 191.82 = 109.98 : x
2. Step 2: Convert to fraction form
   127.86/191.82 = 109.98/x
3. Step 3: Cross multiply
   127.86x = 191.82 × 109.98
4. Step 4: Simplify right side
   127.86x = 21,096.36
5. Step 5: Solve for x
   x = 21,096.36/127.86
6. Step 6: Final answer
   x = 165.00