Finding the Fourth Proportional to 81,498.61, 112,504.92 and 51,328.27

Step by Step Solution

1. Step 1: Write the proportion equation
   81,498.61 : 112,504.92 = 51,328.27 : x
2. Step 2: Convert to fraction form
   81,498.61/112,504.92 = 51,328.27/x
3. Step 3: Cross multiply
   81,498.61x = 112,504.92 × 51,328.27
4. Step 4: Simplify right side
   81,498.61x = 5,774,682,347.56
5. Step 5: Solve for x
   x = 5,774,682,347.56/81,498.61
6. Step 6: Final answer
   x = 70,856.21