Finding the Fourth Proportional to 111,559.50, 153,960.35 and 69,126.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,559.50 : 153,960.35 = 69,126.30 : x
2. Step 2: Convert to fraction form
   111,559.50/153,960.35 = 69,126.30/x
3. Step 3: Cross multiply
   111,559.50x = 153,960.35 × 69,126.30
4. Step 4: Simplify right side
   111,559.50x = 10,642,708,996.57
5. Step 5: Solve for x
   x = 10,642,708,996.57/111,559.50
6. Step 6: Final answer
   x = 95,399.40