Finding the Fourth Proportional to 82,854.56, 114,339.12 and 45,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,854.56 : 114,339.12 = 45,128.72 : x
2. Step 2: Convert to fraction form
   82,854.56/114,339.12 = 45,128.72/x
3. Step 3: Cross multiply
   82,854.56x = 114,339.12 × 45,128.72
4. Step 4: Simplify right side
   82,854.56x = 5,159,978,131.53
5. Step 5: Solve for x
   x = 5,159,978,131.53/82,854.56
6. Step 6: Final answer
   x = 62,277.54