Finding the Fourth Proportional to 56,953.58, 78,581.78 and 49,387.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,953.58 : 78,581.78 = 49,387.82 : x
2. Step 2: Convert to fraction form
   56,953.58/78,581.78 = 49,387.82/x
3. Step 3: Cross multiply
   56,953.58x = 78,581.78 × 49,387.82
4. Step 4: Simplify right side
   56,953.58x = 3,880,982,805.92
5. Step 5: Solve for x
   x = 3,880,982,805.92/56,953.58
6. Step 6: Final answer
   x = 68,142.91