Finding the Fourth Proportional to 143,651.42, 215,405.04 and 83,699.27

Step by Step Solution

1. Step 1: Write the proportion equation
   143,651.42 : 215,405.04 = 83,699.27 : x
2. Step 2: Convert to fraction form
   143,651.42/215,405.04 = 83,699.27/x
3. Step 3: Cross multiply
   143,651.42x = 215,405.04 × 83,699.27
4. Step 4: Simplify right side
   143,651.42x = 18,029,245,140.83
5. Step 5: Solve for x
   x = 18,029,245,140.83/143,651.42
6. Step 6: Final answer
   x = 125,506.90