Finding the Fourth Proportional to 89,689.41, 134,468.24 and 42,975.09

Step by Step Solution

1. Step 1: Write the proportion equation
   89,689.41 : 134,468.24 = 42,975.09 : x
2. Step 2: Convert to fraction form
   89,689.41/134,468.24 = 42,975.09/x
3. Step 3: Cross multiply
   89,689.41x = 134,468.24 × 42,975.09
4. Step 4: Simplify right side
   89,689.41x = 5,778,784,501.27
5. Step 5: Solve for x
   x = 5,778,784,501.27/89,689.41
6. Step 6: Final answer
   x = 64,431.07