Finding the Fourth Proportional to 57,156.48, 85,742.01 and 17,715.96

Step by Step Solution

1. Step 1: Write the proportion equation
   57,156.48 : 85,742.01 = 17,715.96 : x
2. Step 2: Convert to fraction form
   57,156.48/85,742.01 = 17,715.96/x
3. Step 3: Cross multiply
   57,156.48x = 85,742.01 × 17,715.96
4. Step 4: Simplify right side
   57,156.48x = 1,519,002,019.48
5. Step 5: Solve for x
   x = 1,519,002,019.48/57,156.48
6. Step 6: Final answer
   x = 26,576.20