Finding the Fourth Proportional to 105,753.45, 158,621.76 and 42,529

Step by Step Solution

1. Step 1: Write the proportion equation
   105,753.45 : 158,621.76 = 42,529 : x
2. Step 2: Convert to fraction form
   105,753.45/158,621.76 = 42,529/x
3. Step 3: Cross multiply
   105,753.45x = 158,621.76 × 42,529
4. Step 4: Simplify right side
   105,753.45x = 6,746,024,831.04
5. Step 5: Solve for x
   x = 6,746,024,831.04/105,753.45
6. Step 6: Final answer
   x = 63,790.12