Finding the Fourth Proportional to 55,432.34, 83,145.98 and 20,369.42

Step by Step Solution

1. Step 1: Write the proportion equation
   55,432.34 : 83,145.98 = 20,369.42 : x
2. Step 2: Convert to fraction form
   55,432.34/83,145.98 = 20,369.42/x
3. Step 3: Cross multiply
   55,432.34x = 83,145.98 × 20,369.42
4. Step 4: Simplify right side
   55,432.34x = 1,693,635,387.93
5. Step 5: Solve for x
   x = 1,693,635,387.93/55,432.34
6. Step 6: Final answer
   x = 30,553.20