Finding the Fourth Proportional to 105,373.76, 158,127.04 and 76,857.60

Step by Step Solution

1. Step 1: Write the proportion equation
   105,373.76 : 158,127.04 = 76,857.60 : x
2. Step 2: Convert to fraction form
   105,373.76/158,127.04 = 76,857.60/x
3. Step 3: Cross multiply
   105,373.76x = 158,127.04 × 76,857.60
4. Step 4: Simplify right side
   105,373.76x = 12,153,264,789.50
5. Step 5: Solve for x
   x = 12,153,264,789.50/105,373.76
6. Step 6: Final answer
   x = 115,334.83