Finding the Fourth Proportional to 143,601.04, 198,155.20 and 83,191.12

Step by Step Solution

1. Step 1: Write the proportion equation
   143,601.04 : 198,155.20 = 83,191.12 : x
2. Step 2: Convert to fraction form
   143,601.04/198,155.20 = 83,191.12/x
3. Step 3: Cross multiply
   143,601.04x = 198,155.20 × 83,191.12
4. Step 4: Simplify right side
   143,601.04x = 16,484,753,021.82
5. Step 5: Solve for x
   x = 16,484,753,021.82/143,601.04
6. Step 6: Final answer
   x = 114,795.50