Finding the Fourth Proportional to 131,988.72, 182,142.90 and 71,559.48

Step by Step Solution

1. Step 1: Write the proportion equation
   131,988.72 : 182,142.90 = 71,559.48 : x
2. Step 2: Convert to fraction form
   131,988.72/182,142.90 = 71,559.48/x
3. Step 3: Cross multiply
   131,988.72x = 182,142.90 × 71,559.48
4. Step 4: Simplify right side
   131,988.72x = 13,034,051,209.69
5. Step 5: Solve for x
   x = 13,034,051,209.69/131,988.72
6. Step 6: Final answer
   x = 98,751.25