Finding the Fourth Proportional to 185,262.03, 277,898.71 and 128,280.15

Step by Step Solution

1. Step 1: Write the proportion equation
   185,262.03 : 277,898.71 = 128,280.15 : x
2. Step 2: Convert to fraction form
   185,262.03/277,898.71 = 128,280.15/x
3. Step 3: Cross multiply
   185,262.03x = 277,898.71 × 128,280.15
4. Step 4: Simplify right side
   185,262.03x = 35,648,888,203.61
5. Step 5: Solve for x
   x = 35,648,888,203.61/185,262.03
6. Step 6: Final answer
   x = 192,424.15