Finding the Fourth Proportional to 76,080.88, 114,009.72 and 42,865.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,080.88 : 114,009.72 = 42,865.12 : x
2. Step 2: Convert to fraction form
   76,080.88/114,009.72 = 42,865.12/x
3. Step 3: Cross multiply
   76,080.88x = 114,009.72 × 42,865.12
4. Step 4: Simplify right side
   76,080.88x = 4,887,040,328.97
5. Step 5: Solve for x
   x = 4,887,040,328.97/76,080.88
6. Step 6: Final answer
   x = 64,234.80