Finding the Fourth Proportional to 250,105.69, 375,189.38 and 81,580.96

Step by Step Solution

1. Step 1: Write the proportion equation
   250,105.69 : 375,189.38 = 81,580.96 : x
2. Step 2: Convert to fraction form
   250,105.69/375,189.38 = 81,580.96/x
3. Step 3: Cross multiply
   250,105.69x = 375,189.38 × 81,580.96
4. Step 4: Simplify right side
   250,105.69x = 30,608,309,802.20
5. Step 5: Solve for x
   x = 30,608,309,802.20/250,105.69
6. Step 6: Final answer
   x = 122,381.50