Finding the Fourth Proportional to 56,824.72, 78,418.20 and 31,673.68

Step by Step Solution

1. Step 1: Write the proportion equation
   56,824.72 : 78,418.20 = 31,673.68 : x
2. Step 2: Convert to fraction form
   56,824.72/78,418.20 = 31,673.68/x
3. Step 3: Cross multiply
   56,824.72x = 78,418.20 × 31,673.68
4. Step 4: Simplify right side
   56,824.72x = 2,483,792,972.98
5. Step 5: Solve for x
   x = 2,483,792,972.98/56,824.72
6. Step 6: Final answer
   x = 43,709.73