Finding the Fourth Proportional to 139,402.38, 192,023.52 and 112,469.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,402.38 : 192,023.52 = 112,469.52 : x
2. Step 2: Convert to fraction form
   139,402.38/192,023.52 = 112,469.52/x
3. Step 3: Cross multiply
   139,402.38x = 192,023.52 × 112,469.52
4. Step 4: Simplify right side
   139,402.38x = 21,596,793,123.11
5. Step 5: Solve for x
   x = 21,596,793,123.11/139,402.38
6. Step 6: Final answer
   x = 154,924.13