Finding the Fourth Proportional to 138,377.34, 207,631.62 and 82,328.18

Step by Step Solution

1. Step 1: Write the proportion equation
   138,377.34 : 207,631.62 = 82,328.18 : x
2. Step 2: Convert to fraction form
   138,377.34/207,631.62 = 82,328.18/x
3. Step 3: Cross multiply
   138,377.34x = 207,631.62 × 82,328.18
4. Step 4: Simplify right side
   138,377.34x = 17,093,932,346.89
5. Step 5: Solve for x
   x = 17,093,932,346.89/138,377.34
6. Step 6: Final answer
   x = 123,531.30