Finding the Fourth Proportional to 89,461.36, 123,457 and 49,178.62

Step by Step Solution

1. Step 1: Write the proportion equation
   89,461.36 : 123,457 = 49,178.62 : x
2. Step 2: Convert to fraction form
   89,461.36/123,457 = 49,178.62/x
3. Step 3: Cross multiply
   89,461.36x = 123,457 × 49,178.62
4. Step 4: Simplify right side
   89,461.36x = 6,071,444,889.34
5. Step 5: Solve for x
   x = 6,071,444,889.34/89,461.36
6. Step 6: Final answer
   x = 67,866.67