Finding the Fourth Proportional to 868,085.56, 1,301,078.58 and 447,131.80

Step by Step Solution

1. Step 1: Write the proportion equation
   868,085.56 : 1,301,078.58 = 447,131.80 : x
2. Step 2: Convert to fraction form
   868,085.56/1,301,078.58 = 447,131.80/x
3. Step 3: Cross multiply
   868,085.56x = 1,301,078.58 × 447,131.80
4. Step 4: Simplify right side
   868,085.56x = 581,753,607,416.84
5. Step 5: Solve for x
   x = 581,753,607,416.84/868,085.56
6. Step 6: Final answer
   x = 670,156.99