Finding the Fourth Proportional to 89,509.37, 134,264.04 and 42,620.09

Step by Step Solution

1. Step 1: Write the proportion equation
   89,509.37 : 134,264.04 = 42,620.09 : x
2. Step 2: Convert to fraction form
   89,509.37/134,264.04 = 42,620.09/x
3. Step 3: Cross multiply
   89,509.37x = 134,264.04 × 42,620.09
4. Step 4: Simplify right side
   89,509.37x = 5,722,344,797.24
5. Step 5: Solve for x
   x = 5,722,344,797.24/89,509.37
6. Step 6: Final answer
   x = 63,930.12