Finding the Fourth Proportional to 143,429.94, 215,061.48 and 54,689.58

Step by Step Solution

1. Step 1: Write the proportion equation
   143,429.94 : 215,061.48 = 54,689.58 : x
2. Step 2: Convert to fraction form
   143,429.94/215,061.48 = 54,689.58/x
3. Step 3: Cross multiply
   143,429.94x = 215,061.48 × 54,689.58
4. Step 4: Simplify right side
   143,429.94x = 11,761,622,015.38
5. Step 5: Solve for x
   x = 11,761,622,015.38/143,429.94
6. Step 6: Final answer
   x = 82,002.56