Finding the Fourth Proportional to 930,978,423.57, 1,396,611,124.43 and 317,419,160.25

Step by Step Solution

1. Step 1: Write the proportion equation
   930,978,423.57 : 1,396,611,124.43 = 317,419,160.25 : x
2. Step 2: Convert to fraction form
   930,978,423.57/1,396,611,124.43 = 317,419,160.25/x
3. Step 3: Cross multiply
   930,978,423.57x = 1,396,611,124.43 × 317,419,160.25
4. Step 4: Simplify right side
   930,978,423.57x = 443,311,130,310,791,744
5. Step 5: Solve for x
   x = 443,311,130,310,791,744/930,978,423.57
6. Step 6: Final answer
   x = 476,177,663.29