Finding the Fourth Proportional to 143,421.30, 215,131.86 and 43,581.24

Step by Step Solution

1. Step 1: Write the proportion equation
   143,421.30 : 215,131.86 = 43,581.24 : x
2. Step 2: Convert to fraction form
   143,421.30/215,131.86 = 43,581.24/x
3. Step 3: Cross multiply
   143,421.30x = 215,131.86 × 43,581.24
4. Step 4: Simplify right side
   143,421.30x = 9,375,713,222.31
5. Step 5: Solve for x
   x = 9,375,713,222.31/143,421.30
6. Step 6: Final answer
   x = 65,371.83