Finding the Fourth Proportional to 140,452.25, 210,698.31 and 45,651.68

Step by Step Solution

1. Step 1: Write the proportion equation
   140,452.25 : 210,698.31 = 45,651.68 : x
2. Step 2: Convert to fraction form
   140,452.25/210,698.31 = 45,651.68/x
3. Step 3: Cross multiply
   140,452.25x = 210,698.31 × 45,651.68
4. Step 4: Simplify right side
   140,452.25x = 9,618,731,139.89
5. Step 5: Solve for x
   x = 9,618,731,139.89/140,452.25
6. Step 6: Final answer
   x = 68,483.99