Finding the Fourth Proportional to 89,446.32, 123,384.53 and 55,854

Step by Step Solution

1. Step 1: Write the proportion equation
   89,446.32 : 123,384.53 = 55,854 : x
2. Step 2: Convert to fraction form
   89,446.32/123,384.53 = 55,854/x
3. Step 3: Cross multiply
   89,446.32x = 123,384.53 × 55,854
4. Step 4: Simplify right side
   89,446.32x = 6,891,519,259.35
5. Step 5: Solve for x
   x = 6,891,519,259.35/89,446.32
6. Step 6: Final answer
   x = 77,046.43