Finding the Fourth Proportional to 81,856.18, 112,951.42 and 51,630.09

Step by Step Solution

1. Step 1: Write the proportion equation
   81,856.18 : 112,951.42 = 51,630.09 : x
2. Step 2: Convert to fraction form
   81,856.18/112,951.42 = 51,630.09/x
3. Step 3: Cross multiply
   81,856.18x = 112,951.42 × 51,630.09
4. Step 4: Simplify right side
   81,856.18x = 5,831,691,980.23
5. Step 5: Solve for x
   x = 5,831,691,980.23/81,856.18
6. Step 6: Final answer
   x = 71,243.15