Finding the Fourth Proportional to 108,685.88, 162,787.98 and 83,540.78

Step by Step Solution

1. Step 1: Write the proportion equation
   108,685.88 : 162,787.98 = 83,540.78 : x
2. Step 2: Convert to fraction form
   108,685.88/162,787.98 = 83,540.78/x
3. Step 3: Cross multiply
   108,685.88x = 162,787.98 × 83,540.78
4. Step 4: Simplify right side
   108,685.88x = 13,599,434,823.82
5. Step 5: Solve for x
   x = 13,599,434,823.82/108,685.88
6. Step 6: Final answer
   x = 125,126.05