Finding the Fourth Proportional to 143,656.67, 215,412.92 and 83,704.52

Step by Step Solution

1. Step 1: Write the proportion equation
   143,656.67 : 215,412.92 = 83,704.52 : x
2. Step 2: Convert to fraction form
   143,656.67/215,412.92 = 83,704.52/x
3. Step 3: Cross multiply
   143,656.67x = 215,412.92 × 83,704.52
4. Step 4: Simplify right side
   143,656.67x = 18,031,035,504.30
5. Step 5: Solve for x
   x = 18,031,035,504.30/143,656.67
6. Step 6: Final answer
   x = 125,514.78