Finding the Fourth Proportional to 112,436.10, 155,178.12 and 67,116

Step by Step Solution

1. Step 1: Write the proportion equation
   112,436.10 : 155,178.12 = 67,116 : x
2. Step 2: Convert to fraction form
   112,436.10/155,178.12 = 67,116/x
3. Step 3: Cross multiply
   112,436.10x = 155,178.12 × 67,116
4. Step 4: Simplify right side
   112,436.10x = 10,414,934,701.92
5. Step 5: Solve for x
   x = 10,414,934,701.92/112,436.10
6. Step 6: Final answer
   x = 92,629.81