Finding the Fourth Proportional to 108,719.55, 150,034.59 and 81,447.32

Step by Step Solution

1. Step 1: Write the proportion equation
   108,719.55 : 150,034.59 = 81,447.32 : x
2. Step 2: Convert to fraction form
   108,719.55/150,034.59 = 81,447.32/x
3. Step 3: Cross multiply
   108,719.55x = 150,034.59 × 81,447.32
4. Step 4: Simplify right side
   108,719.55x = 12,219,914,105.39
5. Step 5: Solve for x
   x = 12,219,914,105.39/108,719.55
6. Step 6: Final answer
   x = 112,398.50