Finding the Fourth Proportional to 250,913.32, 376,290.69 and 82,405.88

Step by Step Solution

1. Step 1: Write the proportion equation
   250,913.32 : 376,290.69 = 82,405.88 : x
2. Step 2: Convert to fraction form
   250,913.32/376,290.69 = 82,405.88/x
3. Step 3: Cross multiply
   250,913.32x = 376,290.69 × 82,405.88
4. Step 4: Simplify right side
   250,913.32x = 31,008,566,076.96
5. Step 5: Solve for x
   x = 31,008,566,076.96/250,913.32
6. Step 6: Final answer
   x = 123,582.78