Finding the Fourth Proportional to 123,442.10, 170,346.60 and 73,141.10

Step by Step Solution

1. Step 1: Write the proportion equation
   123,442.10 : 170,346.60 = 73,141.10 : x
2. Step 2: Convert to fraction form
   123,442.10/170,346.60 = 73,141.10/x
3. Step 3: Cross multiply
   123,442.10x = 170,346.60 × 73,141.10
4. Step 4: Simplify right side
   123,442.10x = 12,459,336,853.53
5. Step 5: Solve for x
   x = 12,459,336,853.53/123,442.10
6. Step 6: Final answer
   x = 100,932.64