Finding the Fourth Proportional to 57,065.34, 78,749.91 and 31,915.02

Step by Step Solution

1. Step 1: Write the proportion equation
   57,065.34 : 78,749.91 = 31,915.02 : x
2. Step 2: Convert to fraction form
   57,065.34/78,749.91 = 31,915.02/x
3. Step 3: Cross multiply
   57,065.34x = 78,749.91 × 31,915.02
4. Step 4: Simplify right side
   57,065.34x = 2,513,304,952.65
5. Step 5: Solve for x
   x = 2,513,304,952.65/57,065.34
6. Step 6: Final answer
   x = 44,042.58