Finding the Fourth Proportional to 407,123.91, 610,491.78 and 182,486.25

Step by Step Solution

1. Step 1: Write the proportion equation
   407,123.91 : 610,491.78 = 182,486.25 : x
2. Step 2: Convert to fraction form
   407,123.91/610,491.78 = 182,486.25/x
3. Step 3: Cross multiply
   407,123.91x = 610,491.78 × 182,486.25
4. Step 4: Simplify right side
   407,123.91x = 111,406,355,588.03
5. Step 5: Solve for x
   x = 111,406,355,588.03/407,123.91
6. Step 6: Final answer
   x = 273,642.38