Finding the Fourth Proportional to 89,611.69, 123,659.42 and 49,317.75

Step by Step Solution

1. Step 1: Write the proportion equation
   89,611.69 : 123,659.42 = 49,317.75 : x
2. Step 2: Convert to fraction form
   89,611.69/123,659.42 = 49,317.75/x
3. Step 3: Cross multiply
   89,611.69x = 123,659.42 × 49,317.75
4. Step 4: Simplify right side
   89,611.69x = 6,098,604,360.71
5. Step 5: Solve for x
   x = 6,098,604,360.71/89,611.69
6. Step 6: Final answer
   x = 68,055.90