Finding the Fourth Proportional to 250,321.91, 375,505.88 and 81,843.12

Step by Step Solution

1. Step 1: Write the proportion equation
   250,321.91 : 375,505.88 = 81,843.12 : x
2. Step 2: Convert to fraction form
   250,321.91/375,505.88 = 81,843.12/x
3. Step 3: Cross multiply
   250,321.91x = 375,505.88 × 81,843.12
4. Step 4: Simplify right side
   250,321.91x = 30,732,572,388.33
5. Step 5: Solve for x
   x = 30,732,572,388.33/250,321.91
6. Step 6: Final answer
   x = 122,772.21