Finding the Fourth Proportional to 111,719.67, 154,157.10 and 65,751.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,719.67 : 154,157.10 = 65,751.98 : x
2. Step 2: Convert to fraction form
   111,719.67/154,157.10 = 65,751.98/x
3. Step 3: Cross multiply
   111,719.67x = 154,157.10 × 65,751.98
4. Step 4: Simplify right side
   111,719.67x = 10,136,135,340.77
5. Step 5: Solve for x
   x = 10,136,135,340.77/111,719.67
6. Step 6: Final answer
   x = 90,728.30