Finding the Fourth Proportional to 71,912.86, 107,868.37 and 21,994.58

Step by Step Solution

1. Step 1: Write the proportion equation
   71,912.86 : 107,868.37 = 21,994.58 : x
2. Step 2: Convert to fraction form
   71,912.86/107,868.37 = 21,994.58/x
3. Step 3: Cross multiply
   71,912.86x = 107,868.37 × 21,994.58
4. Step 4: Simplify right side
   71,912.86x = 2,372,519,493.43
5. Step 5: Solve for x
   x = 2,372,519,493.43/71,912.86
6. Step 6: Final answer
   x = 32,991.59