Finding the Fourth Proportional to 111,128.65, 166,730.39 and 35,239.63

Step by Step Solution

1. Step 1: Write the proportion equation
   111,128.65 : 166,730.39 = 35,239.63 : x
2. Step 2: Convert to fraction form
   111,128.65/166,730.39 = 35,239.63/x
3. Step 3: Cross multiply
   111,128.65x = 166,730.39 × 35,239.63
4. Step 4: Simplify right side
   111,128.65x = 5,875,517,524.47
5. Step 5: Solve for x
   x = 5,875,517,524.47/111,128.65
6. Step 6: Final answer
   x = 52,871.31