Finding the Fourth Proportional to 111,025.69, 153,118.59 and 78,696.35

Step by Step Solution

1. Step 1: Write the proportion equation
   111,025.69 : 153,118.59 = 78,696.35 : x
2. Step 2: Convert to fraction form
   111,025.69/153,118.59 = 78,696.35/x
3. Step 3: Cross multiply
   111,025.69x = 153,118.59 × 78,696.35
4. Step 4: Simplify right side
   111,025.69x = 12,049,874,150.15
5. Step 5: Solve for x
   x = 12,049,874,150.15/111,025.69
6. Step 6: Final answer
   x = 108,532.31