Finding the Fourth Proportional to 162,932,921.30, 244,682,817.15 and 86,405,417.30

Step by Step Solution

1. Step 1: Write the proportion equation
   162,932,921.30 : 244,682,817.15 = 86,405,417.30 : x
2. Step 2: Convert to fraction form
   162,932,921.30/244,682,817.15 = 86,405,417.30/x
3. Step 3: Cross multiply
   162,932,921.30x = 244,682,817.15 × 86,405,417.30
4. Step 4: Simplify right side
   162,932,921.30x = 21,141,920,921,985,348
5. Step 5: Solve for x
   x = 21,141,920,921,985,348/162,932,921.30
6. Step 6: Final answer
   x = 129,758,435.27