Finding the Fourth Proportional to 56,738.58, 78,259.41 and 49,171.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,738.58 : 78,259.41 = 49,171.62 : x
2. Step 2: Convert to fraction form
   56,738.58/78,259.41 = 49,171.62/x
3. Step 3: Cross multiply
   56,738.58x = 78,259.41 × 49,171.62
4. Step 4: Simplify right side
   56,738.58x = 3,848,141,969.94
5. Step 5: Solve for x
   x = 3,848,141,969.94/56,738.58
6. Step 6: Final answer
   x = 67,822.32