Finding the Fourth Proportional to 139,808.80, 192,956.27 and 101,172.07

Step by Step Solution

1. Step 1: Write the proportion equation
   139,808.80 : 192,956.27 = 101,172.07 : x
2. Step 2: Convert to fraction form
   139,808.80/192,956.27 = 101,172.07/x
3. Step 3: Cross multiply
   139,808.80x = 192,956.27 × 101,172.07
4. Step 4: Simplify right side
   139,808.80x = 19,521,785,255.38
5. Step 5: Solve for x
   x = 19,521,785,255.38/139,808.80
6. Step 6: Final answer
   x = 139,632.02