Finding the Fourth Proportional to 363,980.72, 545,972.43 and 111,260.23

Step by Step Solution

1. Step 1: Write the proportion equation
   363,980.72 : 545,972.43 = 111,260.23 : x
2. Step 2: Convert to fraction form
   363,980.72/545,972.43 = 111,260.23/x
3. Step 3: Cross multiply
   363,980.72x = 545,972.43 × 111,260.23
4. Step 4: Simplify right side
   363,980.72x = 60,745,017,016.77
5. Step 5: Solve for x
   x = 60,745,017,016.77/363,980.72
6. Step 6: Final answer
   x = 166,890.75