Finding the Fourth Proportional to 89,425.64, 134,043.42 and 42,579.56

Step by Step Solution

1. Step 1: Write the proportion equation
   89,425.64 : 134,043.42 = 42,579.56 : x
2. Step 2: Convert to fraction form
   89,425.64/134,043.42 = 42,579.56/x
3. Step 3: Cross multiply
   89,425.64x = 134,043.42 × 42,579.56
4. Step 4: Simplify right side
   89,425.64x = 5,707,509,844.50
5. Step 5: Solve for x
   x = 5,707,509,844.50/89,425.64
6. Step 6: Final answer
   x = 63,824.09