Finding the Fourth Proportional to 143,075.76, 197,447.02 and 78,551

Step by Step Solution

1. Step 1: Write the proportion equation
   143,075.76 : 197,447.02 = 78,551 : x
2. Step 2: Convert to fraction form
   143,075.76/197,447.02 = 78,551/x
3. Step 3: Cross multiply
   143,075.76x = 197,447.02 × 78,551
4. Step 4: Simplify right side
   143,075.76x = 15,509,660,868.02
5. Step 5: Solve for x
   x = 15,509,660,868.02/143,075.76
6. Step 6: Final answer
   x = 108,401.74