Finding the Fourth Proportional to 82,854.72, 114,339.84 and 45,128.64

Step by Step Solution

1. Step 1: Write the proportion equation
   82,854.72 : 114,339.84 = 45,128.64 : x
2. Step 2: Convert to fraction form
   82,854.72/114,339.84 = 45,128.64/x
3. Step 3: Cross multiply
   82,854.72x = 114,339.84 × 45,128.64
4. Step 4: Simplify right side
   82,854.72x = 5,160,001,477.02
5. Step 5: Solve for x
   x = 5,160,001,477.02/82,854.72
6. Step 6: Final answer
   x = 62,277.70