Finding the Fourth Proportional to 105,082.30, 145,035.15 and 64,253.41

Step by Step Solution

1. Step 1: Write the proportion equation
   105,082.30 : 145,035.15 = 64,253.41 : x
2. Step 2: Convert to fraction form
   105,082.30/145,035.15 = 64,253.41/x
3. Step 3: Cross multiply
   105,082.30x = 145,035.15 × 64,253.41
4. Step 4: Simplify right side
   105,082.30x = 9,319,002,957.36
5. Step 5: Solve for x
   x = 9,319,002,957.36/105,082.30
6. Step 6: Final answer
   x = 88,682.90