Finding the Fourth Proportional to 959,838,436.79, 1,438,493,522.88 and 406,456,126.89

Step by Step Solution

1. Step 1: Write the proportion equation
   959,838,436.79 : 1,438,493,522.88 = 406,456,126.89 : x
2. Step 2: Convert to fraction form
   959,838,436.79/1,438,493,522.88 = 406,456,126.89/x
3. Step 3: Cross multiply
   959,838,436.79x = 1,438,493,522.88 × 406,456,126.89
4. Step 4: Simplify right side
   959,838,436.79x = 584,684,505,867,660,160
5. Step 5: Solve for x
   x = 584,684,505,867,660,160/959,838,436.79
6. Step 6: Final answer
   x = 609,148,876.99