Finding the Fourth Proportional to 108,380.84, 149,616.69 and 81,533.57

Step by Step Solution

1. Step 1: Write the proportion equation
   108,380.84 : 149,616.69 = 81,533.57 : x
2. Step 2: Convert to fraction form
   108,380.84/149,616.69 = 81,533.57/x
3. Step 3: Cross multiply
   108,380.84x = 149,616.69 × 81,533.57
4. Step 4: Simplify right side
   108,380.84x = 12,198,782,867.28
5. Step 5: Solve for x
   x = 12,198,782,867.28/108,380.84
6. Step 6: Final answer
   x = 112,554.79