Finding the Fourth Proportional to 64,884.12, 89,554.50 and 42,183.72

Step by Step Solution

1. Step 1: Write the proportion equation
   64,884.12 : 89,554.50 = 42,183.72 : x
2. Step 2: Convert to fraction form
   64,884.12/89,554.50 = 42,183.72/x
3. Step 3: Cross multiply
   64,884.12x = 89,554.50 × 42,183.72
4. Step 4: Simplify right side
   64,884.12x = 3,777,741,952.74
5. Step 5: Solve for x
   x = 3,777,741,952.74/64,884.12
6. Step 6: Final answer
   x = 58,222.90