Finding the Fourth Proportional to 67,607.31, 101,421.90 and 28,168.41

Step by Step Solution

1. Step 1: Write the proportion equation
   67,607.31 : 101,421.90 = 28,168.41 : x
2. Step 2: Convert to fraction form
   67,607.31/101,421.90 = 28,168.41/x
3. Step 3: Cross multiply
   67,607.31x = 101,421.90 × 28,168.41
4. Step 4: Simplify right side
   67,607.31x = 2,856,893,662.18
5. Step 5: Solve for x
   x = 2,856,893,662.18/67,607.31
6. Step 6: Final answer
   x = 42,257.17