Finding the Fourth Proportional to 81,838.71, 122,758.17 and 25,683.12

Step by Step Solution

1. Step 1: Write the proportion equation
   81,838.71 : 122,758.17 = 25,683.12 : x
2. Step 2: Convert to fraction form
   81,838.71/122,758.17 = 25,683.12/x
3. Step 3: Cross multiply
   81,838.71x = 122,758.17 × 25,683.12
4. Step 4: Simplify right side
   81,838.71x = 3,152,812,811.09
5. Step 5: Solve for x
   x = 3,152,812,811.09/81,838.71
6. Step 6: Final answer
   x = 38,524.71