Finding the Fourth Proportional to 111,513.63, 168,106.07 and 104,089.91

Step by Step Solution

1. Step 1: Write the proportion equation
   111,513.63 : 168,106.07 = 104,089.91 : x
2. Step 2: Convert to fraction form
   111,513.63/168,106.07 = 104,089.91/x
3. Step 3: Cross multiply
   111,513.63x = 168,106.07 × 104,089.91
4. Step 4: Simplify right side
   111,513.63x = 17,498,145,476.54
5. Step 5: Solve for x
   x = 17,498,145,476.54/111,513.63
6. Step 6: Final answer
   x = 156,914.86