Finding the Fourth Proportional to 524,185.58, 786,190.79 and 145,144.62

Step by Step Solution

1. Step 1: Write the proportion equation
   524,185.58 : 786,190.79 = 145,144.62 : x
2. Step 2: Convert to fraction form
   524,185.58/786,190.79 = 145,144.62/x
3. Step 3: Cross multiply
   524,185.58x = 786,190.79 × 145,144.62
4. Step 4: Simplify right side
   524,185.58x = 114,111,362,736.33
5. Step 5: Solve for x
   x = 114,111,362,736.33/524,185.58
6. Step 6: Final answer
   x = 217,692.68