Finding the Fourth Proportional to 147.33, 221.29 and 78.83

Step by Step Solution

1. Step 1: Write the proportion equation
   147.33 : 221.29 = 78.83 : x
2. Step 2: Convert to fraction form
   147.33/221.29 = 78.83/x
3. Step 3: Cross multiply
   147.33x = 221.29 × 78.83
4. Step 4: Simplify right side
   147.33x = 17,443.82
5. Step 5: Solve for x
   x = 17,443.82/147.33
6. Step 6: Final answer
   x = 118.40