Finding the Fourth Proportional to 939,805.42, 1,296,341.42 and 557,561.50

Step by Step Solution

1. Step 1: Write the proportion equation
   939,805.42 : 1,296,341.42 = 557,561.50 : x
2. Step 2: Convert to fraction form
   939,805.42/1,296,341.42 = 557,561.50/x
3. Step 3: Cross multiply
   939,805.42x = 1,296,341.42 × 557,561.50
4. Step 4: Simplify right side
   939,805.42x = 722,790,066,647.33
5. Step 5: Solve for x
   x = 722,790,066,647.33/939,805.42
6. Step 6: Final answer
   x = 769,084.80