Finding the Fourth Proportional to 312,653.34, 469,121.49 and 123,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   312,653.34 : 469,121.49 = 123,061.50 : x
2. Step 2: Convert to fraction form
   312,653.34/469,121.49 = 123,061.50/x
3. Step 3: Cross multiply
   312,653.34x = 469,121.49 × 123,061.50
4. Step 4: Simplify right side
   312,653.34x = 57,730,794,241.64
5. Step 5: Solve for x
   x = 57,730,794,241.64/312,653.34
6. Step 6: Final answer
   x = 184,647.94