Finding the Fourth Proportional to 426,527,111.13, 588,608,214.17 and 238,355,406.33

Step by Step Solution

1. Step 1: Write the proportion equation
   426,527,111.13 : 588,608,214.17 = 238,355,406.33 : x
2. Step 2: Convert to fraction form
   426,527,111.13/588,608,214.17 = 238,355,406.33/x
3. Step 3: Cross multiply
   426,527,111.13x = 588,608,214.17 × 238,355,406.33
4. Step 4: Simplify right side
   426,527,111.13x = 140,297,950,057,666,016
5. Step 5: Solve for x
   x = 140,297,950,057,666,016/426,527,111.13
6. Step 6: Final answer
   x = 328,930,908.25