Finding the Fourth Proportional to 419,114.58, 628,665.72 and 103,571.48

Step by Step Solution

1. Step 1: Write the proportion equation
   419,114.58 : 628,665.72 = 103,571.48 : x
2. Step 2: Convert to fraction form
   419,114.58/628,665.72 = 103,571.48/x
3. Step 3: Cross multiply
   419,114.58x = 628,665.72 × 103,571.48
4. Step 4: Simplify right side
   419,114.58x = 65,111,839,045.67
5. Step 5: Solve for x
   x = 65,111,839,045.67/419,114.58
6. Step 6: Final answer
   x = 155,355.70