Finding the Fourth Proportional to 76,738.61, 105,943.17 and 50,932.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,738.61 : 105,943.17 = 50,932.15 : x
2. Step 2: Convert to fraction form
   76,738.61/105,943.17 = 50,932.15/x
3. Step 3: Cross multiply
   76,738.61x = 105,943.17 × 50,932.15
4. Step 4: Simplify right side
   76,738.61x = 5,395,913,558.34
5. Step 5: Solve for x
   x = 5,395,913,558.34/76,738.61
6. Step 6: Final answer
   x = 70,315.50