Finding the Fourth Proportional to 123,142.30, 169,953.59 and 74,768.29

Step by Step Solution

1. Step 1: Write the proportion equation
   123,142.30 : 169,953.59 = 74,768.29 : x
2. Step 2: Convert to fraction form
   123,142.30/169,953.59 = 74,768.29/x
3. Step 3: Cross multiply
   123,142.30x = 169,953.59 × 74,768.29
4. Step 4: Simplify right side
   123,142.30x = 12,707,139,543.69
5. Step 5: Solve for x
   x = 12,707,139,543.69/123,142.30
6. Step 6: Final answer
   x = 103,190.69