Finding the Fourth Proportional to 117,453.68, 162,039 and 67,142

Step by Step Solution

1. Step 1: Write the proportion equation
   117,453.68 : 162,039 = 67,142 : x
2. Step 2: Convert to fraction form
   117,453.68/162,039 = 67,142/x
3. Step 3: Cross multiply
   117,453.68x = 162,039 × 67,142
4. Step 4: Simplify right side
   117,453.68x = 10,879,622,538
5. Step 5: Solve for x
   x = 10,879,622,538/117,453.68
6. Step 6: Final answer
   x = 92,629.05