Finding the Fourth Proportional to 89,443.18, 123,433.03 and 51,202.57

Step by Step Solution

1. Step 1: Write the proportion equation
   89,443.18 : 123,433.03 = 51,202.57 : x
2. Step 2: Convert to fraction form
   89,443.18/123,433.03 = 51,202.57/x
3. Step 3: Cross multiply
   89,443.18x = 123,433.03 × 51,202.57
4. Step 4: Simplify right side
   89,443.18x = 6,320,088,321.17
5. Step 5: Solve for x
   x = 6,320,088,321.17/89,443.18
6. Step 6: Final answer
   x = 70,660.37