Finding the Fourth Proportional to 82,663.50, 113,968.55 and 53,540.05

Step by Step Solution

1. Step 1: Write the proportion equation
   82,663.50 : 113,968.55 = 53,540.05 : x
2. Step 2: Convert to fraction form
   82,663.50/113,968.55 = 53,540.05/x
3. Step 3: Cross multiply
   82,663.50x = 113,968.55 × 53,540.05
4. Step 4: Simplify right side
   82,663.50x = 6,101,881,871.40
5. Step 5: Solve for x
   x = 6,101,881,871.40/82,663.50
6. Step 6: Final answer
   x = 73,815.92