Finding the Fourth Proportional to 143,833.72, 215,781.72 and 55,087.24

Step by Step Solution

1. Step 1: Write the proportion equation
   143,833.72 : 215,781.72 = 55,087.24 : x
2. Step 2: Convert to fraction form
   143,833.72/215,781.72 = 55,087.24/x
3. Step 3: Cross multiply
   143,833.72x = 215,781.72 × 55,087.24
4. Step 4: Simplify right side
   143,833.72x = 11,886,819,397.25
5. Step 5: Solve for x
   x = 11,886,819,397.25/143,833.72
6. Step 6: Final answer
   x = 82,642.79