Finding the Fourth Proportional to 111,720.67, 154,158.48 and 65,752.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,720.67 : 154,158.48 = 65,752.98 : x
2. Step 2: Convert to fraction form
   111,720.67/154,158.48 = 65,752.98/x
3. Step 3: Cross multiply
   111,720.67x = 154,158.48 × 65,752.98
4. Step 4: Simplify right side
   111,720.67x = 10,136,379,452.27
5. Step 5: Solve for x
   x = 10,136,379,452.27/111,720.67
6. Step 6: Final answer
   x = 90,729.67