Finding the Fourth Proportional to 89,145.20, 123,019.62 and 48,858.14

Step by Step Solution

1. Step 1: Write the proportion equation
   89,145.20 : 123,019.62 = 48,858.14 : x
2. Step 2: Convert to fraction form
   89,145.20/123,019.62 = 48,858.14/x
3. Step 3: Cross multiply
   89,145.20x = 123,019.62 × 48,858.14
4. Step 4: Simplify right side
   89,145.20x = 6,010,509,816.71
5. Step 5: Solve for x
   x = 6,010,509,816.71/89,145.20
6. Step 6: Final answer
   x = 67,423.82