Finding the Fourth Proportional to 65,082.15, 89,786.88 and 42,412.86

Step by Step Solution

1. Step 1: Write the proportion equation
   65,082.15 : 89,786.88 = 42,412.86 : x
2. Step 2: Convert to fraction form
   65,082.15/89,786.88 = 42,412.86/x
3. Step 3: Cross multiply
   65,082.15x = 89,786.88 × 42,412.86
4. Step 4: Simplify right side
   65,082.15x = 3,808,118,371.28
5. Step 5: Solve for x
   x = 3,808,118,371.28/65,082.15
6. Step 6: Final answer
   x = 58,512.49