Finding the Fourth Proportional to 65,120.18, 89,861.50 and 36,434.86

Step by Step Solution

1. Step 1: Write the proportion equation
   65,120.18 : 89,861.50 = 36,434.86 : x
2. Step 2: Convert to fraction form
   65,120.18/89,861.50 = 36,434.86/x
3. Step 3: Cross multiply
   65,120.18x = 89,861.50 × 36,434.86
4. Step 4: Simplify right side
   65,120.18x = 3,274,091,171.89
5. Step 5: Solve for x
   x = 3,274,091,171.89/65,120.18
6. Step 6: Final answer
   x = 50,277.67