Finding the Fourth Proportional to 636,978,045.82, 878,576,905.82 and 425,178,090.04

Step by Step Solution

1. Step 1: Write the proportion equation
   636,978,045.82 : 878,576,905.82 = 425,178,090.04 : x
2. Step 2: Convert to fraction form
   636,978,045.82/878,576,905.82 = 425,178,090.04/x
3. Step 3: Cross multiply
   636,978,045.82x = 878,576,905.82 × 425,178,090.04
4. Step 4: Simplify right side
   636,978,045.82x = 373,551,650,769,800,576
5. Step 5: Solve for x
   x = 373,551,650,769,800,576/636,978,045.82
6. Step 6: Final answer
   x = 586,443,525.36