Finding the Fourth Proportional to 123,160.78, 169,974.05 and 74,758.88

Step by Step Solution

1. Step 1: Write the proportion equation
   123,160.78 : 169,974.05 = 74,758.88 : x
2. Step 2: Convert to fraction form
   123,160.78/169,974.05 = 74,758.88/x
3. Step 3: Cross multiply
   123,160.78x = 169,974.05 × 74,758.88
4. Step 4: Simplify right side
   123,160.78x = 12,707,069,607.06
5. Step 5: Solve for x
   x = 12,707,069,607.06/123,160.78
6. Step 6: Final answer
   x = 103,174.64