Finding the Fourth Proportional to 108,388.58, 149,627.37 and 81,541.32

Step by Step Solution

1. Step 1: Write the proportion equation
   108,388.58 : 149,627.37 = 81,541.32 : x
2. Step 2: Convert to fraction form
   108,388.58/149,627.37 = 81,541.32/x
3. Step 3: Cross multiply
   108,388.58x = 149,627.37 × 81,541.32
4. Step 4: Simplify right side
   108,388.58x = 12,200,813,257.93
5. Step 5: Solve for x
   x = 12,200,813,257.93/108,388.58
6. Step 6: Final answer
   x = 112,565.49