Finding the Fourth Proportional to 123,066.72, 169,888.77 and 72,072.36

Step by Step Solution

1. Step 1: Write the proportion equation
   123,066.72 : 169,888.77 = 72,072.36 : x
2. Step 2: Convert to fraction form
   123,066.72/169,888.77 = 72,072.36/x
3. Step 3: Cross multiply
   123,066.72x = 169,888.77 × 72,072.36
4. Step 4: Simplify right side
   123,066.72x = 12,244,284,591.40
5. Step 5: Solve for x
   x = 12,244,284,591.40/123,066.72
6. Step 6: Final answer
   x = 99,493.06