Finding the Fourth Proportional to 315,150.50, 472,727.48 and 78,493.19

Step by Step Solution

1. Step 1: Write the proportion equation
   315,150.50 : 472,727.48 = 78,493.19 : x
2. Step 2: Convert to fraction form
   315,150.50/472,727.48 = 78,493.19/x
3. Step 3: Cross multiply
   315,150.50x = 472,727.48 × 78,493.19
4. Step 4: Simplify right side
   315,150.50x = 37,105,887,905.86
5. Step 5: Solve for x
   x = 37,105,887,905.86/315,150.50
6. Step 6: Final answer
   x = 117,740.22