Finding the Fourth Proportional to 111,092.72, 166,528.31 and 71,677.51

Step by Step Solution

1. Step 1: Write the proportion equation
   111,092.72 : 166,528.31 = 71,677.51 : x
2. Step 2: Convert to fraction form
   111,092.72/166,528.31 = 71,677.51/x
3. Step 3: Cross multiply
   111,092.72x = 166,528.31 × 71,677.51
4. Step 4: Simplify right side
   111,092.72x = 11,936,333,830.60
5. Step 5: Solve for x
   x = 11,936,333,830.60/111,092.72
6. Step 6: Final answer
   x = 107,444.79