Finding the Fourth Proportional to 76,623.32, 105,789.58 and 49,411.58

Step by Step Solution

1. Step 1: Write the proportion equation
   76,623.32 : 105,789.58 = 49,411.58 : x
2. Step 2: Convert to fraction form
   76,623.32/105,789.58 = 49,411.58/x
3. Step 3: Cross multiply
   76,623.32x = 105,789.58 × 49,411.58
4. Step 4: Simplify right side
   76,623.32x = 5,227,229,642.86
5. Step 5: Solve for x
   x = 5,227,229,642.86/76,623.32
6. Step 6: Final answer
   x = 68,219.82