Finding the Fourth Proportional to 144,353.72, 199,204.62 and 80,699

Step by Step Solution

1. Step 1: Write the proportion equation
   144,353.72 : 199,204.62 = 80,699 : x
2. Step 2: Convert to fraction form
   144,353.72/199,204.62 = 80,699/x
3. Step 3: Cross multiply
   144,353.72x = 199,204.62 × 80,699
4. Step 4: Simplify right side
   144,353.72x = 16,075,613,629.38
5. Step 5: Solve for x
   x = 16,075,613,629.38/144,353.72
6. Step 6: Final answer
   x = 111,362.66