Finding the Fourth Proportional to 498,208.06, 747,437.25 and 143,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   498,208.06 : 747,437.25 = 143,222.72 : x
2. Step 2: Convert to fraction form
   498,208.06/747,437.25 = 143,222.72/x
3. Step 3: Cross multiply
   498,208.06x = 747,437.25 × 143,222.72
4. Step 4: Simplify right side
   498,208.06x = 107,049,995,974.32
5. Step 5: Solve for x
   x = 107,049,995,974.32/498,208.06
6. Step 6: Final answer
   x = 214,870.06