Finding the Fourth Proportional to 89,242.08, 123,153.69 and 55,243.78

Step by Step Solution

1. Step 1: Write the proportion equation
   89,242.08 : 123,153.69 = 55,243.78 : x
2. Step 2: Convert to fraction form
   89,242.08/123,153.69 = 55,243.78/x
3. Step 3: Cross multiply
   89,242.08x = 123,153.69 × 55,243.78
4. Step 4: Simplify right side
   89,242.08x = 6,803,475,356.55
5. Step 5: Solve for x
   x = 6,803,475,356.55/89,242.08
6. Step 6: Final answer
   x = 76,236.18