Finding the Fourth Proportional to 248,492, 372,796.32 and 82,280

Step by Step Solution

1. Step 1: Write the proportion equation
   248,492 : 372,796.32 = 82,280 : x
2. Step 2: Convert to fraction form
   248,492/372,796.32 = 82,280/x
3. Step 3: Cross multiply
   248,492x = 372,796.32 × 82,280
4. Step 4: Simplify right side
   248,492x = 30,673,681,209.60
5. Step 5: Solve for x
   x = 30,673,681,209.60/248,492
6. Step 6: Final answer
   x = 123,439.31