Finding the Fourth Proportional to 250,103.69, 375,186.38 and 81,578.96

Step by Step Solution

1. Step 1: Write the proportion equation
   250,103.69 : 375,186.38 = 81,578.96 : x
2. Step 2: Convert to fraction form
   250,103.69/375,186.38 = 81,578.96/x
3. Step 3: Cross multiply
   250,103.69x = 375,186.38 × 81,578.96
4. Step 4: Simplify right side
   250,103.69x = 30,607,312,402.74
5. Step 5: Solve for x
   x = 30,607,312,402.74/250,103.69
6. Step 6: Final answer
   x = 122,378.49