Finding the Fourth Proportional to 89,672.65, 123,751.42 and 49,389.47

Step by Step Solution

1. Step 1: Write the proportion equation
   89,672.65 : 123,751.42 = 49,389.47 : x
2. Step 2: Convert to fraction form
   89,672.65/123,751.42 = 49,389.47/x
3. Step 3: Cross multiply
   89,672.65x = 123,751.42 × 49,389.47
4. Step 4: Simplify right side
   89,672.65x = 6,112,017,045.55
5. Step 5: Solve for x
   x = 6,112,017,045.55/89,672.65
6. Step 6: Final answer
   x = 68,159.21