Finding the Fourth Proportional to 139.83, 192.83 and 93.25

Step by Step Solution

1. Step 1: Write the proportion equation
   139.83 : 192.83 = 93.25 : x
2. Step 2: Convert to fraction form
   139.83/192.83 = 93.25/x
3. Step 3: Cross multiply
   139.83x = 192.83 × 93.25
4. Step 4: Simplify right side
   139.83x = 17,981.70
5. Step 5: Solve for x
   x = 17,981.70/139.83
6. Step 6: Final answer
   x = 128.60