Finding the Fourth Proportional to 89,616.72, 123,656.61 and 51,369.23

Step by Step Solution

1. Step 1: Write the proportion equation
   89,616.72 : 123,656.61 = 51,369.23 : x
2. Step 2: Convert to fraction form
   89,616.72/123,656.61 = 51,369.23/x
3. Step 3: Cross multiply
   89,616.72x = 123,656.61 × 51,369.23
4. Step 4: Simplify right side
   89,616.72x = 6,352,144,221.83
5. Step 5: Solve for x
   x = 6,352,144,221.83/89,616.72
6. Step 6: Final answer
   x = 70,881.24