Finding the Fourth Proportional to 57,085.56, 78,776.12 and 31,593

Step by Step Solution

1. Step 1: Write the proportion equation
   57,085.56 : 78,776.12 = 31,593 : x
2. Step 2: Convert to fraction form
   57,085.56/78,776.12 = 31,593/x
3. Step 3: Cross multiply
   57,085.56x = 78,776.12 × 31,593
4. Step 4: Simplify right side
   57,085.56x = 2,488,773,959.16
5. Step 5: Solve for x
   x = 2,488,773,959.16/57,085.56
6. Step 6: Final answer
   x = 43,597.26