Finding the Fourth Proportional to 89,422.91, 123,402.72 and 49,135.80

Step by Step Solution

1. Step 1: Write the proportion equation
   89,422.91 : 123,402.72 = 49,135.80 : x
2. Step 2: Convert to fraction form
   89,422.91/123,402.72 = 49,135.80/x
3. Step 3: Cross multiply
   89,422.91x = 123,402.72 × 49,135.80
4. Step 4: Simplify right side
   89,422.91x = 6,063,491,369.38
5. Step 5: Solve for x
   x = 6,063,491,369.38/89,422.91
6. Step 6: Final answer
   x = 67,806.92