Finding the Fourth Proportional to 139,400.38, 192,020.76 and 112,467.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,400.38 : 192,020.76 = 112,467.52 : x
2. Step 2: Convert to fraction form
   139,400.38/192,020.76 = 112,467.52/x
3. Step 3: Cross multiply
   139,400.38x = 192,020.76 × 112,467.52
4. Step 4: Simplify right side
   139,400.38x = 21,596,098,665.72
5. Step 5: Solve for x
   x = 21,596,098,665.72/139,400.38
6. Step 6: Final answer
   x = 154,921.38