Finding the Fourth Proportional to 81,719.42, 112,804.62 and 51,498.82

Step by Step Solution

1. Step 1: Write the proportion equation
   81,719.42 : 112,804.62 = 51,498.82 : x
2. Step 2: Convert to fraction form
   81,719.42/112,804.62 = 51,498.82/x
3. Step 3: Cross multiply
   81,719.42x = 112,804.62 × 51,498.82
4. Step 4: Simplify right side
   81,719.42x = 5,809,304,768.43
5. Step 5: Solve for x
   x = 5,809,304,768.43/81,719.42
6. Step 6: Final answer
   x = 71,088.43