Finding the Fourth Proportional to 105,786.88, 158,602.56 and 50,421.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,786.88 : 158,602.56 = 50,421.76 : x
2. Step 2: Convert to fraction form
   105,786.88/158,602.56 = 50,421.76/x
3. Step 3: Cross multiply
   105,786.88x = 158,602.56 × 50,421.76
4. Step 4: Simplify right side
   105,786.88x = 7,997,020,215.71
5. Step 5: Solve for x
   x = 7,997,020,215.71/105,786.88
6. Step 6: Final answer
   x = 75,595.58