Finding the Fourth Proportional to 162,932,647.30, 244,682,406.15 and 86,405,143.30

Step by Step Solution

1. Step 1: Write the proportion equation
   162,932,647.30 : 244,682,406.15 = 86,405,143.30 : x
2. Step 2: Convert to fraction form
   162,932,647.30/244,682,406.15 = 86,405,143.30/x
3. Step 3: Cross multiply
   162,932,647.30x = 244,682,406.15 × 86,405,143.30
4. Step 4: Simplify right side
   162,932,647.30x = 21,141,818,366,379,552
5. Step 5: Solve for x
   x = 21,141,818,366,379,552/162,932,647.30
6. Step 6: Final answer
   x = 129,758,024.05