Finding the Fourth Proportional to 81,980.56, 113,090.38 and 51,755

Step by Step Solution

1. Step 1: Write the proportion equation
   81,980.56 : 113,090.38 = 51,755 : x
2. Step 2: Convert to fraction form
   81,980.56/113,090.38 = 51,755/x
3. Step 3: Cross multiply
   81,980.56x = 113,090.38 × 51,755
4. Step 4: Simplify right side
   81,980.56x = 5,852,992,616.90
5. Step 5: Solve for x
   x = 5,852,992,616.90/81,980.56
6. Step 6: Final answer
   x = 71,394.88