Finding the Fourth Proportional to 76,288.72, 114,327.78 and 55,059.52

Step by Step Solution

1. Step 1: Write the proportion equation
   76,288.72 : 114,327.78 = 55,059.52 : x
2. Step 2: Convert to fraction form
   76,288.72/114,327.78 = 55,059.52/x
3. Step 3: Cross multiply
   76,288.72x = 114,327.78 × 55,059.52
4. Step 4: Simplify right side
   76,288.72x = 6,294,832,689.47
5. Step 5: Solve for x
   x = 6,294,832,689.47/76,288.72
6. Step 6: Final answer
   x = 82,513.28