Finding the Fourth Proportional to 426,527,111.63, 588,608,214.87 and 238,355,406.83

Step by Step Solution

1. Step 1: Write the proportion equation
   426,527,111.63 : 588,608,214.87 = 238,355,406.83 : x
2. Step 2: Convert to fraction form
   426,527,111.63/588,608,214.87 = 238,355,406.83/x
3. Step 3: Cross multiply
   426,527,111.63x = 588,608,214.87 × 238,355,406.83
4. Step 4: Simplify right side
   426,527,111.63x = 140,297,950,515,875,856
5. Step 5: Solve for x
   x = 140,297,950,515,875,856/426,527,111.63
6. Step 6: Final answer
   x = 328,930,908.94