Finding the Fourth Proportional to 89,499.36, 123,511.12 and 49,210.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,499.36 : 123,511.12 = 49,210.56 : x
2. Step 2: Convert to fraction form
   89,499.36/123,511.12 = 49,210.56/x
3. Step 3: Cross multiply
   89,499.36x = 123,511.12 × 49,210.56
4. Step 4: Simplify right side
   89,499.36x = 6,078,051,381.43
5. Step 5: Solve for x
   x = 6,078,051,381.43/89,499.36
6. Step 6: Final answer
   x = 67,911.67