Finding the Fourth Proportional to 42,404.79, 63,608.55 and 21,333.33

Step by Step Solution

1. Step 1: Write the proportion equation
   42,404.79 : 63,608.55 = 21,333.33 : x
2. Step 2: Convert to fraction form
   42,404.79/63,608.55 = 21,333.33/x
3. Step 3: Cross multiply
   42,404.79x = 63,608.55 × 21,333.33
4. Step 4: Simplify right side
   42,404.79x = 1,356,982,187.97
5. Step 5: Solve for x
   x = 1,356,982,187.97/42,404.79
6. Step 6: Final answer
   x = 32,000.68