Finding the Fourth Proportional to 459,491.84, 688,978.56 and 178,687.52

Step by Step Solution

1. Step 1: Write the proportion equation
   459,491.84 : 688,978.56 = 178,687.52 : x
2. Step 2: Convert to fraction form
   459,491.84/688,978.56 = 178,687.52/x
3. Step 3: Cross multiply
   459,491.84x = 688,978.56 × 178,687.52
4. Step 4: Simplify right side
   459,491.84x = 123,111,870,219.57
5. Step 5: Solve for x
   x = 123,111,870,219.57/459,491.84
6. Step 6: Final answer
   x = 267,930.48