Finding the Fourth Proportional to 109,150.79, 163,719.49 and 64,197

Step by Step Solution

1. Step 1: Write the proportion equation
   109,150.79 : 163,719.49 = 64,197 : x
2. Step 2: Convert to fraction form
   109,150.79/163,719.49 = 64,197/x
3. Step 3: Cross multiply
   109,150.79x = 163,719.49 × 64,197
4. Step 4: Simplify right side
   109,150.79x = 10,510,300,099.53
5. Step 5: Solve for x
   x = 10,510,300,099.53/109,150.79
6. Step 6: Final answer
   x = 96,291.56