Finding the Fourth Proportional to 89,715.48, 123,807.30 and 49,429.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,715.48 : 123,807.30 = 49,429.25 : x
2. Step 2: Convert to fraction form
   89,715.48/123,807.30 = 49,429.25/x
3. Step 3: Cross multiply
   89,715.48x = 123,807.30 × 49,429.25
4. Step 4: Simplify right side
   89,715.48x = 6,119,701,480.56
5. Step 5: Solve for x
   x = 6,119,701,480.56/89,715.48
6. Step 6: Final answer
   x = 68,212.32