Finding the Fourth Proportional to 81,864.01, 112,987.81 and 51,251.34

Step by Step Solution

1. Step 1: Write the proportion equation
   81,864.01 : 112,987.81 = 51,251.34 : x
2. Step 2: Convert to fraction form
   81,864.01/112,987.81 = 51,251.34/x
3. Step 3: Cross multiply
   81,864.01x = 112,987.81 × 51,251.34
4. Step 4: Simplify right side
   81,864.01x = 5,790,776,666.17
5. Step 5: Solve for x
   x = 5,790,776,666.17/81,864.01
6. Step 6: Final answer
   x = 70,736.54