Finding the Fourth Proportional to 143,089.38, 214,633.89 and 54,342.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,089.38 : 214,633.89 = 54,342.72 : x
2. Step 2: Convert to fraction form
   143,089.38/214,633.89 = 54,342.72/x
3. Step 3: Cross multiply
   143,089.38x = 214,633.89 × 54,342.72
4. Step 4: Simplify right side
   143,089.38x = 11,663,789,386.78
5. Step 5: Solve for x
   x = 11,663,789,386.78/143,089.38
6. Step 6: Final answer
   x = 81,514.01