Finding the Fourth Proportional to 961,139.76, 1,442,302.56 and 488,164.56

Step by Step Solution

1. Step 1: Write the proportion equation
   961,139.76 : 1,442,302.56 = 488,164.56 : x
2. Step 2: Convert to fraction form
   961,139.76/1,442,302.56 = 488,164.56/x
3. Step 3: Cross multiply
   961,139.76x = 1,442,302.56 × 488,164.56
4. Step 4: Simplify right side
   961,139.76x = 704,080,994,589.27
5. Step 5: Solve for x
   x = 704,080,994,589.27/961,139.76
6. Step 6: Final answer
   x = 732,547.99