Finding the Fourth Proportional to 89,579.18, 134,339.34 and 39,658.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,579.18 : 134,339.34 = 39,658.25 : x
2. Step 2: Convert to fraction form
   89,579.18/134,339.34 = 39,658.25/x
3. Step 3: Cross multiply
   89,579.18x = 134,339.34 × 39,658.25
4. Step 4: Simplify right side
   89,579.18x = 5,327,663,130.56
5. Step 5: Solve for x
   x = 5,327,663,130.56/89,579.18
6. Step 6: Final answer
   x = 59,474.35