Finding the Fourth Proportional to 248,470, 372,763.32 and 82,258

Step by Step Solution

1. Step 1: Write the proportion equation
   248,470 : 372,763.32 = 82,258 : x
2. Step 2: Convert to fraction form
   248,470/372,763.32 = 82,258/x
3. Step 3: Cross multiply
   248,470x = 372,763.32 × 82,258
4. Step 4: Simplify right side
   248,470x = 30,662,765,176.56
5. Step 5: Solve for x
   x = 30,662,765,176.56/248,470
6. Step 6: Final answer
   x = 123,406.31