Finding the Fourth Proportional to 89,778.31, 123,891.59 and 49,492.08

Step by Step Solution

1. Step 1: Write the proportion equation
   89,778.31 : 123,891.59 = 49,492.08 : x
2. Step 2: Convert to fraction form
   89,778.31/123,891.59 = 49,492.08/x
3. Step 3: Cross multiply
   89,778.31x = 123,891.59 × 49,492.08
4. Step 4: Simplify right side
   89,778.31x = 6,131,652,607.34
5. Step 5: Solve for x
   x = 6,131,652,607.34/89,778.31
6. Step 6: Final answer
   x = 68,297.71