Finding the Fourth Proportional to 162,493.49, 243,845.49 and 87,665.29

Step by Step Solution

1. Step 1: Write the proportion equation
   162,493.49 : 243,845.49 = 87,665.29 : x
2. Step 2: Convert to fraction form
   162,493.49/243,845.49 = 87,665.29/x
3. Step 3: Cross multiply
   162,493.49x = 243,845.49 × 87,665.29
4. Step 4: Simplify right side
   162,493.49x = 21,376,785,596.04
5. Step 5: Solve for x
   x = 21,376,785,596.04/162,493.49
6. Step 6: Final answer
   x = 131,554.72