Finding the Fourth Proportional to 57,061.57, 78,738.91 and 31,563.90

Step by Step Solution

1. Step 1: Write the proportion equation
   57,061.57 : 78,738.91 = 31,563.90 : x
2. Step 2: Convert to fraction form
   57,061.57/78,738.91 = 31,563.90/x
3. Step 3: Cross multiply
   57,061.57x = 78,738.91 × 31,563.90
4. Step 4: Simplify right side
   57,061.57x = 2,485,307,081.35
5. Step 5: Solve for x
   x = 2,485,307,081.35/57,061.57
6. Step 6: Final answer
   x = 43,554.83