Finding the Fourth Proportional to 89,664.84, 123,821.46 and 56,189.16

Step by Step Solution

1. Step 1: Write the proportion equation
   89,664.84 : 123,821.46 = 56,189.16 : x
2. Step 2: Convert to fraction form
   89,664.84/123,821.46 = 56,189.16/x
3. Step 3: Cross multiply
   89,664.84x = 123,821.46 × 56,189.16
4. Step 4: Simplify right side
   89,664.84x = 6,957,423,827.37
5. Step 5: Solve for x
   x = 6,957,423,827.37/89,664.84
6. Step 6: Final answer
   x = 77,593.67