Finding the Fourth Proportional to 403,132.33, 556,308.67 and 221,827.31

Step by Step Solution

1. Step 1: Write the proportion equation
   403,132.33 : 556,308.67 = 221,827.31 : x
2. Step 2: Convert to fraction form
   403,132.33/556,308.67 = 221,827.31/x
3. Step 3: Cross multiply
   403,132.33x = 556,308.67 × 221,827.31
4. Step 4: Simplify right side
   403,132.33x = 123,404,455,795.78
5. Step 5: Solve for x
   x = 123,404,455,795.78/403,132.33
6. Step 6: Final answer
   x = 306,114.01