Finding the Fourth Proportional to 105,077.76, 157,723.85 and 76,914.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,077.76 : 157,723.85 = 76,914.16 : x
2. Step 2: Convert to fraction form
   105,077.76/157,723.85 = 76,914.16/x
3. Step 3: Cross multiply
   105,077.76x = 157,723.85 × 76,914.16
4. Step 4: Simplify right side
   105,077.76x = 12,131,197,232.69
5. Step 5: Solve for x
   x = 12,131,197,232.69/105,077.76
6. Step 6: Final answer
   x = 115,449.72