Finding the Fourth Proportional to 123,819.34, 170,871.37 and 67,230.72

Step by Step Solution

1. Step 1: Write the proportion equation
   123,819.34 : 170,871.37 = 67,230.72 : x
2. Step 2: Convert to fraction form
   123,819.34/170,871.37 = 67,230.72/x
3. Step 3: Cross multiply
   123,819.34x = 170,871.37 × 67,230.72
4. Step 4: Simplify right side
   123,819.34x = 11,487,805,232.49
5. Step 5: Solve for x
   x = 11,487,805,232.49/123,819.34
6. Step 6: Final answer
   x = 92,778.76