Finding the Fourth Proportional to 123,078.42, 169,888.59 and 74,682.54

Step by Step Solution

1. Step 1: Write the proportion equation
   123,078.42 : 169,888.59 = 74,682.54 : x
2. Step 2: Convert to fraction form
   123,078.42/169,888.59 = 74,682.54/x
3. Step 3: Cross multiply
   123,078.42x = 169,888.59 × 74,682.54
4. Step 4: Simplify right side
   123,078.42x = 12,687,711,418.22
5. Step 5: Solve for x
   x = 12,687,711,418.22/123,078.42
6. Step 6: Final answer
   x = 103,086.40