Finding the Fourth Proportional to 111,978.10, 154,561.53 and 73,765.54

Step by Step Solution

1. Step 1: Write the proportion equation
   111,978.10 : 154,561.53 = 73,765.54 : x
2. Step 2: Convert to fraction form
   111,978.10/154,561.53 = 73,765.54/x
3. Step 3: Cross multiply
   111,978.10x = 154,561.53 × 73,765.54
4. Step 4: Simplify right side
   111,978.10x = 11,401,314,723.68
5. Step 5: Solve for x
   x = 11,401,314,723.68/111,978.10
6. Step 6: Final answer
   x = 101,817.36