Finding the Fourth Proportional to 57,404.34, 86,114.27 and 19,959.57

Step by Step Solution

1. Step 1: Write the proportion equation
   57,404.34 : 86,114.27 = 19,959.57 : x
2. Step 2: Convert to fraction form
   57,404.34/86,114.27 = 19,959.57/x
3. Step 3: Cross multiply
   57,404.34x = 86,114.27 × 19,959.57
4. Step 4: Simplify right side
   57,404.34x = 1,718,803,849.96
5. Step 5: Solve for x
   x = 1,718,803,849.96/57,404.34
6. Step 6: Final answer
   x = 29,942.05