Finding the Fourth Proportional to 636,978,043.82, 878,576,903.06 and 425,178,088.04

Step by Step Solution

1. Step 1: Write the proportion equation
   636,978,043.82 : 878,576,903.06 = 425,178,088.04 : x
2. Step 2: Convert to fraction form
   636,978,043.82/878,576,903.06 = 425,178,088.04/x
3. Step 3: Cross multiply
   636,978,043.82x = 878,576,903.06 × 425,178,088.04
4. Step 4: Simplify right side
   636,978,043.82x = 373,551,647,839,155,200
5. Step 5: Solve for x
   x = 373,551,647,839,155,200/636,978,043.82
6. Step 6: Final answer
   x = 586,443,522.60