Finding the Fourth Proportional to 71,978.91, 107,964.45 and 22,059.15

Step by Step Solution

1. Step 1: Write the proportion equation
   71,978.91 : 107,964.45 = 22,059.15 : x
2. Step 2: Convert to fraction form
   71,978.91/107,964.45 = 22,059.15/x
3. Step 3: Cross multiply
   71,978.91x = 107,964.45 × 22,059.15
4. Step 4: Simplify right side
   71,978.91x = 2,381,603,997.22
5. Step 5: Solve for x
   x = 2,381,603,997.22/71,978.91
6. Step 6: Final answer
   x = 33,087.53