Finding the Fourth Proportional to 300,123.75, 450,019.42 and 122,755.32

Step by Step Solution

1. Step 1: Write the proportion equation
   300,123.75 : 450,019.42 = 122,755.32 : x
2. Step 2: Convert to fraction form
   300,123.75/450,019.42 = 122,755.32/x
3. Step 3: Cross multiply
   300,123.75x = 450,019.42 × 122,755.32
4. Step 4: Simplify right side
   300,123.75x = 55,242,277,908.31
5. Step 5: Solve for x
   x = 55,242,277,908.31/300,123.75
6. Step 6: Final answer
   x = 184,065.00