Finding the Fourth Proportional to 108,772.15, 150,258.50 and 83,940.79

Step by Step Solution

1. Step 1: Write the proportion equation
   108,772.15 : 150,258.50 = 83,940.79 : x
2. Step 2: Convert to fraction form
   108,772.15/150,258.50 = 83,940.79/x
3. Step 3: Cross multiply
   108,772.15x = 150,258.50 × 83,940.79
4. Step 4: Simplify right side
   108,772.15x = 12,612,817,194.22
5. Step 5: Solve for x
   x = 12,612,817,194.22/108,772.15
6. Step 6: Final answer
   x = 115,956.31