Finding the Fourth Proportional to 143,959.49, 215,736.25 and 67,976.96

Step by Step Solution

1. Step 1: Write the proportion equation
   143,959.49 : 215,736.25 = 67,976.96 : x
2. Step 2: Convert to fraction form
   143,959.49/215,736.25 = 67,976.96/x
3. Step 3: Cross multiply
   143,959.49x = 215,736.25 × 67,976.96
4. Step 4: Simplify right side
   143,959.49x = 14,665,094,436.80
5. Step 5: Solve for x
   x = 14,665,094,436.80/143,959.49
6. Step 6: Final answer
   x = 101,869.59