Finding the Fourth Proportional to 89,796.74, 123,926.88 and 49,518.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,796.74 : 123,926.88 = 49,518.40 : x
2. Step 2: Convert to fraction form
   89,796.74/123,926.88 = 49,518.40/x
3. Step 3: Cross multiply
   89,796.74x = 123,926.88 × 49,518.40
4. Step 4: Simplify right side
   89,796.74x = 6,136,660,814.59
5. Step 5: Solve for x
   x = 6,136,660,814.59/89,796.74
6. Step 6: Final answer
   x = 68,339.46