Finding the Fourth Proportional to 89,485.86, 123,491.31 and 49,199.89

Step by Step Solution

1. Step 1: Write the proportion equation
   89,485.86 : 123,491.31 = 49,199.89 : x
2. Step 2: Convert to fraction form
   89,485.86/123,491.31 = 49,199.89/x
3. Step 3: Cross multiply
   89,485.86x = 123,491.31 × 49,199.89
4. Step 4: Simplify right side
   89,485.86x = 6,075,758,867.96
5. Step 5: Solve for x
   x = 6,075,758,867.96/89,485.86
6. Step 6: Final answer
   x = 67,896.30