Finding the Fourth Proportional to 465,181,200.74, 641,954,361.72 and 256,344,816.56

Step by Step Solution

1. Step 1: Write the proportion equation
   465,181,200.74 : 641,954,361.72 = 256,344,816.56 : x
2. Step 2: Convert to fraction form
   465,181,200.74/641,954,361.72 = 256,344,816.56/x
3. Step 3: Cross multiply
   465,181,200.74x = 641,954,361.72 × 256,344,816.56
4. Step 4: Simplify right side
   465,181,200.74x = 164,561,673,095,005,280
5. Step 5: Solve for x
   x = 164,561,673,095,005,280/465,181,200.74
6. Step 6: Final answer
   x = 353,758,219.02