Finding the Fourth Proportional to 109.32, 150.83 and 78.29

Step by Step Solution

1. Step 1: Write the proportion equation
   109.32 : 150.83 = 78.29 : x
2. Step 2: Convert to fraction form
   109.32/150.83 = 78.29/x
3. Step 3: Cross multiply
   109.32x = 150.83 × 78.29
4. Step 4: Simplify right side
   109.32x = 11,807.34
5. Step 5: Solve for x
   x = 11,807.34/109.32
6. Step 6: Final answer
   x = 108.01