Finding the Fourth Proportional to 108,897, 150,303.78 and 66,491.34

Step by Step Solution

1. Step 1: Write the proportion equation
   108,897 : 150,303.78 = 66,491.34 : x
2. Step 2: Convert to fraction form
   108,897/150,303.78 = 66,491.34/x
3. Step 3: Cross multiply
   108,897x = 150,303.78 × 66,491.34
4. Step 4: Simplify right side
   108,897x = 9,993,899,739.27
5. Step 5: Solve for x
   x = 9,993,899,739.27/108,897
6. Step 6: Final answer
   x = 91,773.88