Finding the Fourth Proportional to 81,848.17, 122,766.72 and 31,918.96

Step by Step Solution

1. Step 1: Write the proportion equation
   81,848.17 : 122,766.72 = 31,918.96 : x
2. Step 2: Convert to fraction form
   81,848.17/122,766.72 = 31,918.96/x
3. Step 3: Cross multiply
   81,848.17x = 122,766.72 × 31,918.96
4. Step 4: Simplify right side
   81,848.17x = 3,918,586,025.01
5. Step 5: Solve for x
   x = 3,918,586,025.01/81,848.17
6. Step 6: Final answer
   x = 47,876.28