Finding the Fourth Proportional to 188,086.72, 282,058.88 and 75,728.64

Step by Step Solution

1. Step 1: Write the proportion equation
   188,086.72 : 282,058.88 = 75,728.64 : x
2. Step 2: Convert to fraction form
   188,086.72/282,058.88 = 75,728.64/x
3. Step 3: Cross multiply
   188,086.72x = 282,058.88 × 75,728.64
4. Step 4: Simplify right side
   188,086.72x = 21,359,935,382.32
5. Step 5: Solve for x
   x = 21,359,935,382.32/188,086.72
6. Step 6: Final answer
   x = 113,564.29