Finding the Fourth Proportional to 131,405.67, 181,339.83 and 71,789.67

Step by Step Solution

1. Step 1: Write the proportion equation
   131,405.67 : 181,339.83 = 71,789.67 : x
2. Step 2: Convert to fraction form
   131,405.67/181,339.83 = 71,789.67/x
3. Step 3: Cross multiply
   131,405.67x = 181,339.83 × 71,789.67
4. Step 4: Simplify right side
   131,405.67x = 13,018,326,553.56
5. Step 5: Solve for x
   x = 13,018,326,553.56/131,405.67
6. Step 6: Final answer
   x = 99,069.75