Finding the Fourth Proportional to 463,870.19, 640,130.04 and 272,895.89

Step by Step Solution

1. Step 1: Write the proportion equation
   463,870.19 : 640,130.04 = 272,895.89 : x
2. Step 2: Convert to fraction form
   463,870.19/640,130.04 = 272,895.89/x
3. Step 3: Cross multiply
   463,870.19x = 640,130.04 × 272,895.89
4. Step 4: Simplify right side
   463,870.19x = 174,688,853,780.89
5. Step 5: Solve for x
   x = 174,688,853,780.89/463,870.19
6. Step 6: Final answer
   x = 376,589.95