Finding the Fourth Proportional to 64,871.13, 89,445.46 and 45,754.05

Step by Step Solution

1. Step 1: Write the proportion equation
   64,871.13 : 89,445.46 = 45,754.05 : x
2. Step 2: Convert to fraction form
   64,871.13/89,445.46 = 45,754.05/x
3. Step 3: Cross multiply
   64,871.13x = 89,445.46 × 45,754.05
4. Step 4: Simplify right side
   64,871.13x = 4,092,492,049.11
5. Step 5: Solve for x
   x = 4,092,492,049.11/64,871.13
6. Step 6: Final answer
   x = 63,086.49