Finding the Fourth Proportional to 930,978,425.58, 1,396,611,127.42 and 317,419,162.26

Step by Step Solution

1. Step 1: Write the proportion equation
   930,978,425.58 : 1,396,611,127.42 = 317,419,162.26 : x
2. Step 2: Convert to fraction form
   930,978,425.58/1,396,611,127.42 = 317,419,162.26/x
3. Step 3: Cross multiply
   930,978,425.58x = 1,396,611,127.42 × 317,419,162.26
4. Step 4: Simplify right side
   930,978,425.58x = 443,311,134,068,650,496
5. Step 5: Solve for x
   x = 443,311,134,068,650,496/930,978,425.58
6. Step 6: Final answer
   x = 476,177,666.30