Finding the Fourth Proportional to 81,756.82, 112,820.78 and 47,768.45

Step by Step Solution

1. Step 1: Write the proportion equation
   81,756.82 : 112,820.78 = 47,768.45 : x
2. Step 2: Convert to fraction form
   81,756.82/112,820.78 = 47,768.45/x
3. Step 3: Cross multiply
   81,756.82x = 112,820.78 × 47,768.45
4. Step 4: Simplify right side
   81,756.82x = 5,389,273,549.55
5. Step 5: Solve for x
   x = 5,389,273,549.55/81,756.82
6. Step 6: Final answer
   x = 65,918.34