Finding the Fourth Proportional to 81,930.32, 122,896.17 and 25,769.12

Step by Step Solution

1. Step 1: Write the proportion equation
   81,930.32 : 122,896.17 = 25,769.12 : x
2. Step 2: Convert to fraction form
   81,930.32/122,896.17 = 25,769.12/x
3. Step 3: Cross multiply
   81,930.32x = 122,896.17 × 25,769.12
4. Step 4: Simplify right side
   81,930.32x = 3,166,926,152.27
5. Step 5: Solve for x
   x = 3,166,926,152.27/81,930.32
6. Step 6: Final answer
   x = 38,653.90