Finding the Fourth Proportional to 262,976,057.89, 394,517,887.04 and 90,430,462.69

Step by Step Solution

1. Step 1: Write the proportion equation
   262,976,057.89 : 394,517,887.04 = 90,430,462.69 : x
2. Step 2: Convert to fraction form
   262,976,057.89/394,517,887.04 = 90,430,462.69/x
3. Step 3: Cross multiply
   262,976,057.89x = 394,517,887.04 × 90,430,462.69
4. Step 4: Simplify right side
   262,976,057.89x = 35,676,435,064,056,204
5. Step 5: Solve for x
   x = 35,676,435,064,056,204/262,976,057.89
6. Step 6: Final answer
   x = 135,664,194.49