Finding the Fourth Proportional to 89,405.77, 123,381.32 and 49,120.32

Step by Step Solution

1. Step 1: Write the proportion equation
   89,405.77 : 123,381.32 = 49,120.32 : x
2. Step 2: Convert to fraction form
   89,405.77/123,381.32 = 49,120.32/x
3. Step 3: Cross multiply
   89,405.77x = 123,381.32 × 49,120.32
4. Step 4: Simplify right side
   89,405.77x = 6,060,529,580.54
5. Step 5: Solve for x
   x = 6,060,529,580.54/89,405.77
6. Step 6: Final answer
   x = 67,786.79