Finding the Fourth Proportional to 111,112.90, 166,669.35 and 103,677.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,112.90 : 166,669.35 = 103,677.10 : x
2. Step 2: Convert to fraction form
   111,112.90/166,669.35 = 103,677.10/x
3. Step 3: Cross multiply
   111,112.90x = 166,669.35 × 103,677.10
4. Step 4: Simplify right side
   111,112.90x = 17,279,794,866.89
5. Step 5: Solve for x
   x = 17,279,794,866.89/111,112.90
6. Step 6: Final answer
   x = 155,515.65