Finding the Fourth Proportional to 112,978.24, 156,116.26 and 82,297.92

Step by Step Solution

1. Step 1: Write the proportion equation
   112,978.24 : 156,116.26 = 82,297.92 : x
2. Step 2: Convert to fraction form
   112,978.24/156,116.26 = 82,297.92/x
3. Step 3: Cross multiply
   112,978.24x = 156,116.26 × 82,297.92
4. Step 4: Simplify right side
   112,978.24x = 12,848,044,164.49
5. Step 5: Solve for x
   x = 12,848,044,164.49/112,978.24
6. Step 6: Final answer
   x = 113,721.40