Finding the Fourth Proportional to 94.83, 142.49 and 83.31

Step by Step Solution

1. Step 1: Write the proportion equation
   94.83 : 142.49 = 83.31 : x
2. Step 2: Convert to fraction form
   94.83/142.49 = 83.31/x
3. Step 3: Cross multiply
   94.83x = 142.49 × 83.31
4. Step 4: Simplify right side
   94.83x = 11,870.43
5. Step 5: Solve for x
   x = 11,870.43/94.83
6. Step 6: Final answer
   x = 125.18