Finding the Fourth Proportional to 89,664.50, 123,737.29 and 53,855.10

Step by Step Solution

1. Step 1: Write the proportion equation
   89,664.50 : 123,737.29 = 53,855.10 : x
2. Step 2: Convert to fraction form
   89,664.50/123,737.29 = 53,855.10/x
3. Step 3: Cross multiply
   89,664.50x = 123,737.29 × 53,855.10
4. Step 4: Simplify right side
   89,664.50x = 6,663,883,992.04
5. Step 5: Solve for x
   x = 6,663,883,992.04/89,664.50
6. Step 6: Final answer
   x = 74,320.20