Finding the Fourth Proportional to 315,015.14, 472,524.42 and 78,357.83

Step by Step Solution

1. Step 1: Write the proportion equation
   315,015.14 : 472,524.42 = 78,357.83 : x
2. Step 2: Convert to fraction form
   315,015.14/472,524.42 = 78,357.83/x
3. Step 3: Cross multiply
   315,015.14x = 472,524.42 × 78,357.83
4. Step 4: Simplify right side
   315,015.14x = 37,025,985,810.59
5. Step 5: Solve for x
   x = 37,025,985,810.59/315,015.14
6. Step 6: Final answer
   x = 117,537.16