Finding the Fourth Proportional to 89,145.30, 123,020.50 and 48,860.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,145.30 : 123,020.50 = 48,860.36 : x
2. Step 2: Convert to fraction form
   89,145.30/123,020.50 = 48,860.36/x
3. Step 3: Cross multiply
   89,145.30x = 123,020.50 × 48,860.36
4. Step 4: Simplify right side
   89,145.30x = 6,010,825,917.38
5. Step 5: Solve for x
   x = 6,010,825,917.38/89,145.30
6. Step 6: Final answer
   x = 67,427.29