Finding the Fourth Proportional to 143,693.82, 198,303.56 and 80,031.60

Step by Step Solution

1. Step 1: Write the proportion equation
   143,693.82 : 198,303.56 = 80,031.60 : x
2. Step 2: Convert to fraction form
   143,693.82/198,303.56 = 80,031.60/x
3. Step 3: Cross multiply
   143,693.82x = 198,303.56 × 80,031.60
4. Step 4: Simplify right side
   143,693.82x = 15,870,551,192.50
5. Step 5: Solve for x
   x = 15,870,551,192.50/143,693.82
6. Step 6: Final answer
   x = 110,447.00