Finding the Fourth Proportional to 50,978.84, 76,484.52 and 21,388.73

Step by Step Solution

1. Step 1: Write the proportion equation
   50,978.84 : 76,484.52 = 21,388.73 : x
2. Step 2: Convert to fraction form
   50,978.84/76,484.52 = 21,388.73/x
3. Step 3: Cross multiply
   50,978.84x = 76,484.52 × 21,388.73
4. Step 4: Simplify right side
   50,978.84x = 1,635,906,747.46
5. Step 5: Solve for x
   x = 1,635,906,747.46/50,978.84
6. Step 6: Final answer
   x = 32,089.92