Finding the Fourth Proportional to 139,269.60, 192,068.28 and 112,403.52

Step by Step Solution

1. Step 1: Write the proportion equation
   139,269.60 : 192,068.28 = 112,403.52 : x
2. Step 2: Convert to fraction form
   139,269.60/192,068.28 = 112,403.52/x
3. Step 3: Cross multiply
   139,269.60x = 192,068.28 × 112,403.52
4. Step 4: Simplify right side
   139,269.60x = 21,589,150,752.35
5. Step 5: Solve for x
   x = 21,589,150,752.35/139,269.60
6. Step 6: Final answer
   x = 155,016.97