Finding the Fourth Proportional to 228,973.29, 315,942.42 and 138,268.56

Step by Step Solution

1. Step 1: Write the proportion equation
   228,973.29 : 315,942.42 = 138,268.56 : x
2. Step 2: Convert to fraction form
   228,973.29/315,942.42 = 138,268.56/x
3. Step 3: Cross multiply
   228,973.29x = 315,942.42 × 138,268.56
4. Step 4: Simplify right side
   228,973.29x = 43,684,903,456.32
5. Step 5: Solve for x
   x = 43,684,903,456.32/228,973.29
6. Step 6: Final answer
   x = 190,786.02