Finding the Fourth Proportional to 81,520.32, 122,298.12 and 25,359.42

Step by Step Solution

1. Step 1: Write the proportion equation
   81,520.32 : 122,298.12 = 25,359.42 : x
2. Step 2: Convert to fraction form
   81,520.32/122,298.12 = 25,359.42/x
3. Step 3: Cross multiply
   81,520.32x = 122,298.12 × 25,359.42
4. Step 4: Simplify right side
   81,520.32x = 3,101,409,390.29
5. Step 5: Solve for x
   x = 3,101,409,390.29/81,520.32
6. Step 6: Final answer
   x = 38,044.62