Finding the Fourth Proportional to 123,119.76, 169,893 and 75,386.64

Step by Step Solution

1. Step 1: Write the proportion equation
   123,119.76 : 169,893 = 75,386.64 : x
2. Step 2: Convert to fraction form
   123,119.76/169,893 = 75,386.64/x
3. Step 3: Cross multiply
   123,119.76x = 169,893 × 75,386.64
4. Step 4: Simplify right side
   123,119.76x = 12,807,662,429.52
5. Step 5: Solve for x
   x = 12,807,662,429.52/123,119.76
6. Step 6: Final answer
   x = 104,026.05