Finding the Fourth Proportional to 191.10, 286.41 and 109.98

Step by Step Solution

1. Step 1: Write the proportion equation
   191.10 : 286.41 = 109.98 : x
2. Step 2: Convert to fraction form
   191.10/286.41 = 109.98/x
3. Step 3: Cross multiply
   191.10x = 286.41 × 109.98
4. Step 4: Simplify right side
   191.10x = 31,499.37
5. Step 5: Solve for x
   x = 31,499.37/191.10
6. Step 6: Final answer
   x = 164.83