Finding the Fourth Proportional to 76,308.37, 105,357.71 and 47,671.63

Step by Step Solution

1. Step 1: Write the proportion equation
   76,308.37 : 105,357.71 = 47,671.63 : x
2. Step 2: Convert to fraction form
   76,308.37/105,357.71 = 47,671.63/x
3. Step 3: Cross multiply
   76,308.37x = 105,357.71 × 47,671.63
4. Step 4: Simplify right side
   76,308.37x = 5,022,573,768.77
5. Step 5: Solve for x
   x = 5,022,573,768.77/76,308.37
6. Step 6: Final answer
   x = 65,819.43