Finding the Fourth Proportional to 315,498.58, 472,768.98 and 231,314.78

Step by Step Solution

1. Step 1: Write the proportion equation
   315,498.58 : 472,768.98 = 231,314.78 : x
2. Step 2: Convert to fraction form
   315,498.58/472,768.98 = 231,314.78/x
3. Step 3: Cross multiply
   315,498.58x = 472,768.98 × 231,314.78
4. Step 4: Simplify right side
   315,498.58x = 109,358,452,599.52
5. Step 5: Solve for x
   x = 109,358,452,599.52/315,498.58
6. Step 6: Final answer
   x = 346,621.06