Finding the Fourth Proportional to 275,855.76, 413,741.52 and 131,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   275,855.76 : 413,741.52 = 131,724.72 : x
2. Step 2: Convert to fraction form
   275,855.76/413,741.52 = 131,724.72/x
3. Step 3: Cross multiply
   275,855.76x = 413,741.52 × 131,724.72
4. Step 4: Simplify right side
   275,855.76x = 54,499,985,874.37
5. Step 5: Solve for x
   x = 54,499,985,874.37/275,855.76
6. Step 6: Final answer
   x = 197,566.97