Finding the Fourth Proportional to 111,309.07, 153,626.25 and 84,406.23

Step by Step Solution

1. Step 1: Write the proportion equation
   111,309.07 : 153,626.25 = 84,406.23 : x
2. Step 2: Convert to fraction form
   111,309.07/153,626.25 = 84,406.23/x
3. Step 3: Cross multiply
   111,309.07x = 153,626.25 × 84,406.23
4. Step 4: Simplify right side
   111,309.07x = 12,967,012,591.54
5. Step 5: Solve for x
   x = 12,967,012,591.54/111,309.07
6. Step 6: Final answer
   x = 116,495.56