Finding the Fourth Proportional to 78,977.52, 118,388.52 and 31,578.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,977.52 : 118,388.52 = 31,578.57 : x
2. Step 2: Convert to fraction form
   78,977.52/118,388.52 = 31,578.57/x
3. Step 3: Cross multiply
   78,977.52x = 118,388.52 × 31,578.57
4. Step 4: Simplify right side
   78,977.52x = 3,738,540,166.02
5. Step 5: Solve for x
   x = 3,738,540,166.02/78,977.52
6. Step 6: Final answer
   x = 47,336.76