Finding the Fourth Proportional to 57,499.32, 86,249.34 and 20,059.26

Step by Step Solution

1. Step 1: Write the proportion equation
   57,499.32 : 86,249.34 = 20,059.26 : x
2. Step 2: Convert to fraction form
   57,499.32/86,249.34 = 20,059.26/x
3. Step 3: Cross multiply
   57,499.32x = 86,249.34 × 20,059.26
4. Step 4: Simplify right side
   57,499.32x = 1,730,097,935.89
5. Step 5: Solve for x
   x = 1,730,097,935.89/57,499.32
6. Step 6: Final answer
   x = 30,089.02