Finding the Fourth Proportional to 82,539.69, 113,649.72 and 64,463.43

Step by Step Solution

1. Step 1: Write the proportion equation
   82,539.69 : 113,649.72 = 64,463.43 : x
2. Step 2: Convert to fraction form
   82,539.69/113,649.72 = 64,463.43/x
3. Step 3: Cross multiply
   82,539.69x = 113,649.72 × 64,463.43
4. Step 4: Simplify right side
   82,539.69x = 7,326,250,769.74
5. Step 5: Solve for x
   x = 7,326,250,769.74/82,539.69
6. Step 6: Final answer
   x = 88,760.34