Finding the Fourth Proportional to 250,020.72, 375,053.87 and 81,497.79

Step by Step Solution

1. Step 1: Write the proportion equation
   250,020.72 : 375,053.87 = 81,497.79 : x
2. Step 2: Convert to fraction form
   250,020.72/375,053.87 = 81,497.79/x
3. Step 3: Cross multiply
   250,020.72x = 375,053.87 × 81,497.79
4. Step 4: Simplify right side
   250,020.72x = 30,566,061,128.46
5. Step 5: Solve for x
   x = 30,566,061,128.46/250,020.72
6. Step 6: Final answer
   x = 122,254.11