Finding the Fourth Proportional to 76,541, 105,589.78 and 49,691.93

Step by Step Solution

1. Step 1: Write the proportion equation
   76,541 : 105,589.78 = 49,691.93 : x
2. Step 2: Convert to fraction form
   76,541/105,589.78 = 49,691.93/x
3. Step 3: Cross multiply
   76,541x = 105,589.78 × 49,691.93
4. Step 4: Simplify right side
   76,541x = 5,246,959,708.02
5. Step 5: Solve for x
   x = 5,246,959,708.02/76,541
6. Step 6: Final answer
   x = 68,550.97