Finding the Fourth Proportional to 651,978,945.66, 899,737,436.07 and 354,628,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   651,978,945.66 : 899,737,436.07 = 354,628,105.50 : x
2. Step 2: Convert to fraction form
   651,978,945.66/899,737,436.07 = 354,628,105.50/x
3. Step 3: Cross multiply
   651,978,945.66x = 899,737,436.07 × 354,628,105.50
4. Step 4: Simplify right side
   651,978,945.66x = 319,072,182,400,931,456
5. Step 5: Solve for x
   x = 319,072,182,400,931,456/651,978,945.66
6. Step 6: Final answer
   x = 489,390,316.24