Finding the Fourth Proportional to 111,469.26, 153,880.50 and 70,653.78

Step by Step Solution

1. Step 1: Write the proportion equation
   111,469.26 : 153,880.50 = 70,653.78 : x
2. Step 2: Convert to fraction form
   111,469.26/153,880.50 = 70,653.78/x
3. Step 3: Cross multiply
   111,469.26x = 153,880.50 × 70,653.78
4. Step 4: Simplify right side
   111,469.26x = 10,872,238,993.29
5. Step 5: Solve for x
   x = 10,872,238,993.29/111,469.26
6. Step 6: Final answer
   x = 97,535.76