Finding the Fourth Proportional to 554,291,003.32, 764,957,092.71 and 319,337,394.28

Step by Step Solution

1. Step 1: Write the proportion equation
   554,291,003.32 : 764,957,092.71 = 319,337,394.28 : x
2. Step 2: Convert to fraction form
   554,291,003.32/764,957,092.71 = 319,337,394.28/x
3. Step 3: Cross multiply
   554,291,003.32x = 764,957,092.71 × 319,337,394.28
4. Step 4: Simplify right side
   554,291,003.32x = 244,279,404,722,015,776
5. Step 5: Solve for x
   x = 244,279,404,722,015,776/554,291,003.32
6. Step 6: Final answer
   x = 440,706,061.00