Finding the Fourth Proportional to 89,568.99, 123,553.86 and 55,976.67

Step by Step Solution

1. Step 1: Write the proportion equation
   89,568.99 : 123,553.86 = 55,976.67 : x
2. Step 2: Convert to fraction form
   89,568.99/123,553.86 = 55,976.67/x
3. Step 3: Cross multiply
   89,568.99x = 123,553.86 × 55,976.67
4. Step 4: Simplify right side
   89,568.99x = 6,916,133,438.53
5. Step 5: Solve for x
   x = 6,916,133,438.53/89,568.99
6. Step 6: Final answer
   x = 77,215.71