Finding the Fourth Proportional to 71,898.14, 107,847.47 and 21,978.04

Step by Step Solution

1. Step 1: Write the proportion equation
   71,898.14 : 107,847.47 = 21,978.04 : x
2. Step 2: Convert to fraction form
   71,898.14/107,847.47 = 21,978.04/x
3. Step 3: Cross multiply
   71,898.14x = 107,847.47 × 21,978.04
4. Step 4: Simplify right side
   71,898.14x = 2,370,275,794.89
5. Step 5: Solve for x
   x = 2,370,275,794.89/71,898.14
6. Step 6: Final answer
   x = 32,967.14