Finding the Fourth Proportional to 139,403.38, 192,024.90 and 112,470.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,403.38 : 192,024.90 = 112,470.52 : x
2. Step 2: Convert to fraction form
   139,403.38/192,024.90 = 112,470.52/x
3. Step 3: Cross multiply
   139,403.38x = 192,024.90 × 112,470.52
4. Step 4: Simplify right side
   139,403.38x = 21,597,140,355.95
5. Step 5: Solve for x
   x = 21,597,140,355.95/139,403.38
6. Step 6: Final answer
   x = 154,925.51