Finding the Fourth Proportional to 117,928.72, 162,723.31 and 67,618

Step by Step Solution

1. Step 1: Write the proportion equation
   117,928.72 : 162,723.31 = 67,618 : x
2. Step 2: Convert to fraction form
   117,928.72/162,723.31 = 67,618/x
3. Step 3: Cross multiply
   117,928.72x = 162,723.31 × 67,618
4. Step 4: Simplify right side
   117,928.72x = 11,003,024,775.58
5. Step 5: Solve for x
   x = 11,003,024,775.58/117,928.72
6. Step 6: Final answer
   x = 93,302.33