Finding the Fourth Proportional to 112,986.55, 156,127.73 and 82,306.25

Step by Step Solution

1. Step 1: Write the proportion equation
   112,986.55 : 156,127.73 = 82,306.25 : x
2. Step 2: Convert to fraction form
   112,986.55/156,127.73 = 82,306.25/x
3. Step 3: Cross multiply
   112,986.55x = 156,127.73 × 82,306.25
4. Step 4: Simplify right side
   112,986.55x = 12,850,287,977.31
5. Step 5: Solve for x
   x = 12,850,287,977.31/112,986.55
6. Step 6: Final answer
   x = 113,732.90