Finding the Fourth Proportional to 335,345.54, 503,152.71 and 122,128.31

Step by Step Solution

1. Step 1: Write the proportion equation
   335,345.54 : 503,152.71 = 122,128.31 : x
2. Step 2: Convert to fraction form
   335,345.54/503,152.71 = 122,128.31/x
3. Step 3: Cross multiply
   335,345.54x = 503,152.71 × 122,128.31
4. Step 4: Simplify right side
   335,345.54x = 61,449,188,800.86
5. Step 5: Solve for x
   x = 61,449,188,800.86/335,345.54
6. Step 6: Final answer
   x = 183,241.41