Finding the Fourth Proportional to 143,387.27, 215,120.18 and 43,550.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,387.27 : 215,120.18 = 43,550.72 : x
2. Step 2: Convert to fraction form
   143,387.27/215,120.18 = 43,550.72/x
3. Step 3: Cross multiply
   143,387.27x = 215,120.18 × 43,550.72
4. Step 4: Simplify right side
   143,387.27x = 9,368,637,758.81
5. Step 5: Solve for x
   x = 9,368,637,758.81/143,387.27
6. Step 6: Final answer
   x = 65,338.00