Finding the Fourth Proportional to 111,878.33, 168,429.86 and 102,080.57

Step by Step Solution

1. Step 1: Write the proportion equation
   111,878.33 : 168,429.86 = 102,080.57 : x
2. Step 2: Convert to fraction form
   111,878.33/168,429.86 = 102,080.57/x
3. Step 3: Cross multiply
   111,878.33x = 168,429.86 × 102,080.57
4. Step 4: Simplify right side
   111,878.33x = 17,193,415,144.07
5. Step 5: Solve for x
   x = 17,193,415,144.07/111,878.33
6. Step 6: Final answer
   x = 153,679.59