Finding the Fourth Proportional to 139.37, 192.32 and 83.34

Step by Step Solution

1. Step 1: Write the proportion equation
   139.37 : 192.32 = 83.34 : x
2. Step 2: Convert to fraction form
   139.37/192.32 = 83.34/x
3. Step 3: Cross multiply
   139.37x = 192.32 × 83.34
4. Step 4: Simplify right side
   139.37x = 16,028.16
5. Step 5: Solve for x
   x = 16,028.16/139.37
6. Step 6: Final answer
   x = 115.01