Finding the Fourth Proportional to 123,042.56, 169,800.32 and 72,741.12

Step by Step Solution

1. Step 1: Write the proportion equation
   123,042.56 : 169,800.32 = 72,741.12 : x
2. Step 2: Convert to fraction form
   123,042.56/169,800.32 = 72,741.12/x
3. Step 3: Cross multiply
   123,042.56x = 169,800.32 × 72,741.12
4. Step 4: Simplify right side
   123,042.56x = 12,351,465,453.16
5. Step 5: Solve for x
   x = 12,351,465,453.16/123,042.56
6. Step 6: Final answer
   x = 100,383.68