Finding the Fourth Proportional to 57,046.22, 78,724.25 and 31,554.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,046.22 : 78,724.25 = 31,554.31 : x
2. Step 2: Convert to fraction form
   57,046.22/78,724.25 = 31,554.31/x
3. Step 3: Cross multiply
   57,046.22x = 78,724.25 × 31,554.31
4. Step 4: Simplify right side
   57,046.22x = 2,484,089,477.86
5. Step 5: Solve for x
   x = 2,484,089,477.86/57,046.22
6. Step 6: Final answer
   x = 43,545.20