Finding the Fourth Proportional to 89,425.57, 123,409 and 49,136.93

Step by Step Solution

1. Step 1: Write the proportion equation
   89,425.57 : 123,409 = 49,136.93 : x
2. Step 2: Convert to fraction form
   89,425.57/123,409 = 49,136.93/x
3. Step 3: Cross multiply
   89,425.57x = 123,409 × 49,136.93
4. Step 4: Simplify right side
   89,425.57x = 6,063,938,777.33
5. Step 5: Solve for x
   x = 6,063,938,777.33/89,425.57
6. Step 6: Final answer
   x = 67,809.90