Finding the Fourth Proportional to 81,626.42, 122,393.69 and 28,293.41

Step by Step Solution

1. Step 1: Write the proportion equation
   81,626.42 : 122,393.69 = 28,293.41 : x
2. Step 2: Convert to fraction form
   81,626.42/122,393.69 = 28,293.41/x
3. Step 3: Cross multiply
   81,626.42x = 122,393.69 × 28,293.41
4. Step 4: Simplify right side
   81,626.42x = 3,462,935,123.20
5. Step 5: Solve for x
   x = 3,462,935,123.20/81,626.42
6. Step 6: Final answer
   x = 42,424.19