Finding the Fourth Proportional to 496,061.48, 684,588.24 and 281,205.72

Step by Step Solution

1. Step 1: Write the proportion equation
   496,061.48 : 684,588.24 = 281,205.72 : x
2. Step 2: Convert to fraction form
   496,061.48/684,588.24 = 281,205.72/x
3. Step 3: Cross multiply
   496,061.48x = 684,588.24 × 281,205.72
4. Step 4: Simplify right side
   496,061.48x = 192,510,128,932.73
5. Step 5: Solve for x
   x = 192,510,128,932.73/496,061.48
6. Step 6: Final answer
   x = 388,077.16