Finding the Fourth Proportional to 105,881.35, 158,819.97 and 42,700.05

Step by Step Solution

1. Step 1: Write the proportion equation
   105,881.35 : 158,819.97 = 42,700.05 : x
2. Step 2: Convert to fraction form
   105,881.35/158,819.97 = 42,700.05/x
3. Step 3: Cross multiply
   105,881.35x = 158,819.97 × 42,700.05
4. Step 4: Simplify right side
   105,881.35x = 6,781,620,660.00
5. Step 5: Solve for x
   x = 6,781,620,660.00/105,881.35
6. Step 6: Final answer
   x = 64,049.25