Finding the Fourth Proportional to 57,401.91, 79,215.58 and 31,561.55

Step by Step Solution

1. Step 1: Write the proportion equation
   57,401.91 : 79,215.58 = 31,561.55 : x
2. Step 2: Convert to fraction form
   57,401.91/79,215.58 = 31,561.55/x
3. Step 3: Cross multiply
   57,401.91x = 79,215.58 × 31,561.55
4. Step 4: Simplify right side
   57,401.91x = 2,500,166,488.95
5. Step 5: Solve for x
   x = 2,500,166,488.95/57,401.91
6. Step 6: Final answer
   x = 43,555.46