Finding the Fourth Proportional to 139.83, 209.82 and 94.38

Step by Step Solution

1. Step 1: Write the proportion equation
   139.83 : 209.82 = 94.38 : x
2. Step 2: Convert to fraction form
   139.83/209.82 = 94.38/x
3. Step 3: Cross multiply
   139.83x = 209.82 × 94.38
4. Step 4: Simplify right side
   139.83x = 19,802.81
5. Step 5: Solve for x
   x = 19,802.81/139.83
6. Step 6: Final answer
   x = 141.62