Finding the Fourth Proportional to 272,443.33, 408,680.34 and 82,909.86

Step by Step Solution

1. Step 1: Write the proportion equation
   272,443.33 : 408,680.34 = 82,909.86 : x
2. Step 2: Convert to fraction form
   272,443.33/408,680.34 = 82,909.86/x
3. Step 3: Cross multiply
   272,443.33x = 408,680.34 × 82,909.86
4. Step 4: Simplify right side
   272,443.33x = 33,883,629,774.15
5. Step 5: Solve for x
   x = 33,883,629,774.15/272,443.33
6. Step 6: Final answer
   x = 124,369.46