Finding the Fourth Proportional to 495,603.96, 743,436.72 and 140,645.76

Step by Step Solution

1. Step 1: Write the proportion equation
   495,603.96 : 743,436.72 = 140,645.76 : x
2. Step 2: Convert to fraction form
   495,603.96/743,436.72 = 140,645.76/x
3. Step 3: Cross multiply
   495,603.96x = 743,436.72 × 140,645.76
4. Step 4: Simplify right side
   495,603.96x = 104,561,222,496.31
5. Step 5: Solve for x
   x = 104,561,222,496.31/495,603.96
6. Step 6: Final answer
   x = 210,977.37