Finding the Fourth Proportional to 57,700.56, 86,561.40 and 26,535

Step by Step Solution

1. Step 1: Write the proportion equation
   57,700.56 : 86,561.40 = 26,535 : x
2. Step 2: Convert to fraction form
   57,700.56/86,561.40 = 26,535/x
3. Step 3: Cross multiply
   57,700.56x = 86,561.40 × 26,535
4. Step 4: Simplify right side
   57,700.56x = 2,296,906,749
5. Step 5: Solve for x
   x = 2,296,906,749/57,700.56
6. Step 6: Final answer
   x = 39,807.36