Finding the Fourth Proportional to 123,111.96, 169,838.94 and 75,346.20

Step by Step Solution

1. Step 1: Write the proportion equation
   123,111.96 : 169,838.94 = 75,346.20 : x
2. Step 2: Convert to fraction form
   123,111.96/169,838.94 = 75,346.20/x
3. Step 3: Cross multiply
   123,111.96x = 169,838.94 × 75,346.20
4. Step 4: Simplify right side
   123,111.96x = 12,796,718,741.03
5. Step 5: Solve for x
   x = 12,796,718,741.03/123,111.96
6. Step 6: Final answer
   x = 103,943.75