Finding the Fourth Proportional to 105,754.02, 158,519.61 and 42,618.96

Step by Step Solution

1. Step 1: Write the proportion equation
   105,754.02 : 158,519.61 = 42,618.96 : x
2. Step 2: Convert to fraction form
   105,754.02/158,519.61 = 42,618.96/x
3. Step 3: Cross multiply
   105,754.02x = 158,519.61 × 42,618.96
4. Step 4: Simplify right side
   105,754.02x = 6,755,940,917.81
5. Step 5: Solve for x
   x = 6,755,940,917.81/105,754.02
6. Step 6: Final answer
   x = 63,883.54