Finding the Fourth Proportional to 81,411.47, 122,125.50 and 28,096.51

Step by Step Solution

1. Step 1: Write the proportion equation
   81,411.47 : 122,125.50 = 28,096.51 : x
2. Step 2: Convert to fraction form
   81,411.47/122,125.50 = 28,096.51/x
3. Step 3: Cross multiply
   81,411.47x = 122,125.50 × 28,096.51
4. Step 4: Simplify right side
   81,411.47x = 3,431,300,777.74
5. Step 5: Solve for x
   x = 3,431,300,777.74/81,411.47
6. Step 6: Final answer
   x = 42,147.63