Finding the Fourth Proportional to 55,365, 83,080.71 and 20,308.20

Step by Step Solution

1. Step 1: Write the proportion equation
   55,365 : 83,080.71 = 20,308.20 : x
2. Step 2: Convert to fraction form
   55,365/83,080.71 = 20,308.20/x
3. Step 3: Cross multiply
   55,365x = 83,080.71 × 20,308.20
4. Step 4: Simplify right side
   55,365x = 1,687,219,674.82
5. Step 5: Solve for x
   x = 1,687,219,674.82/55,365
6. Step 6: Final answer
   x = 30,474.48