Finding the Fourth Proportional to 89,619, 123,677.10 and 49,330.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,619 : 123,677.10 = 49,330.68 : x
2. Step 2: Convert to fraction form
   89,619/123,677.10 = 49,330.68/x
3. Step 3: Cross multiply
   89,619x = 123,677.10 × 49,330.68
4. Step 4: Simplify right side
   89,619x = 6,101,075,443.43
5. Step 5: Solve for x
   x = 6,101,075,443.43/89,619
6. Step 6: Final answer
   x = 68,077.92