Finding the Fourth Proportional to 498,387.05, 747,695.06 and 143,404.01

Step by Step Solution

1. Step 1: Write the proportion equation
   498,387.05 : 747,695.06 = 143,404.01 : x
2. Step 2: Convert to fraction form
   498,387.05/747,695.06 = 143,404.01/x
3. Step 3: Cross multiply
   498,387.05x = 747,695.06 × 143,404.01
4. Step 4: Simplify right side
   498,387.05x = 107,222,469,144.17
5. Step 5: Solve for x
   x = 107,222,469,144.17/498,387.05
6. Step 6: Final answer
   x = 215,138.96