Finding the Fourth Proportional to 56,819.58, 78,411.54 and 31,326.83

Step by Step Solution

1. Step 1: Write the proportion equation
   56,819.58 : 78,411.54 = 31,326.83 : x
2. Step 2: Convert to fraction form
   56,819.58/78,411.54 = 31,326.83/x
3. Step 3: Cross multiply
   56,819.58x = 78,411.54 × 31,326.83
4. Step 4: Simplify right side
   56,819.58x = 2,456,384,983.62
5. Step 5: Solve for x
   x = 2,456,384,983.62/56,819.58
6. Step 6: Final answer
   x = 43,231.31