Finding the Fourth Proportional to 144,341.67, 199,192.17 and 80,678.10

Step by Step Solution

1. Step 1: Write the proportion equation
   144,341.67 : 199,192.17 = 80,678.10 : x
2. Step 2: Convert to fraction form
   144,341.67/199,192.17 = 80,678.10/x
3. Step 3: Cross multiply
   144,341.67x = 199,192.17 × 80,678.10
4. Step 4: Simplify right side
   144,341.67x = 16,070,445,810.48
5. Step 5: Solve for x
   x = 16,070,445,810.48/144,341.67
6. Step 6: Final answer
   x = 111,336.15