Finding the Fourth Proportional to 82,857.72, 114,343.98 and 45,131.64

Step by Step Solution

1. Step 1: Write the proportion equation
   82,857.72 : 114,343.98 = 45,131.64 : x
2. Step 2: Convert to fraction form
   82,857.72/114,343.98 = 45,131.64/x
3. Step 3: Cross multiply
   82,857.72x = 114,343.98 × 45,131.64
4. Step 4: Simplify right side
   82,857.72x = 5,160,531,341.53
5. Step 5: Solve for x
   x = 5,160,531,341.53/82,857.72
6. Step 6: Final answer
   x = 62,281.84