Finding the Fourth Proportional to 89,427.46, 123,418.56 and 51,190.15

Step by Step Solution

1. Step 1: Write the proportion equation
   89,427.46 : 123,418.56 = 51,190.15 : x
2. Step 2: Convert to fraction form
   89,427.46/123,418.56 = 51,190.15/x
3. Step 3: Cross multiply
   89,427.46x = 123,418.56 × 51,190.15
4. Step 4: Simplify right side
   89,427.46x = 6,317,814,917.15
5. Step 5: Solve for x
   x = 6,317,814,917.15/89,427.46
6. Step 6: Final answer
   x = 70,647.37