Finding the Fourth Proportional to 143,474.00, 197,993.18 and 78,947.17

Step by Step Solution

1. Step 1: Write the proportion equation
   143,474.00 : 197,993.18 = 78,947.17 : x
2. Step 2: Convert to fraction form
   143,474.00/197,993.18 = 78,947.17/x
3. Step 3: Cross multiply
   143,474.00x = 197,993.18 × 78,947.17
4. Step 4: Simplify right side
   143,474.00x = 15,631,000,942.69
5. Step 5: Solve for x
   x = 15,631,000,942.69/143,474.00
6. Step 6: Final answer
   x = 108,946.58