Finding the Fourth Proportional to 105,846.52, 158,659.08 and 77,724.76

Step by Step Solution

1. Step 1: Write the proportion equation
   105,846.52 : 158,659.08 = 77,724.76 : x
2. Step 2: Convert to fraction form
   105,846.52/158,659.08 = 77,724.76/x
3. Step 3: Cross multiply
   105,846.52x = 158,659.08 × 77,724.76
4. Step 4: Simplify right side
   105,846.52x = 12,331,738,914.82
5. Step 5: Solve for x
   x = 12,331,738,914.82/105,846.52
6. Step 6: Final answer
   x = 116,505.85