Finding the Fourth Proportional to 111,061.44, 166,315.68 and 64,172.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,061.44 : 166,315.68 = 64,172.16 : x
2. Step 2: Convert to fraction form
   111,061.44/166,315.68 = 64,172.16/x
3. Step 3: Cross multiply
   111,061.44x = 166,315.68 × 64,172.16
4. Step 4: Simplify right side
   111,061.44x = 10,672,836,427.47
5. Step 5: Solve for x
   x = 10,672,836,427.47/111,061.44
6. Step 6: Final answer
   x = 96,098.49