Finding the Fourth Proportional to 207,510.72, 286,365.96 and 118,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   207,510.72 : 286,365.96 = 118,086.72 : x
2. Step 2: Convert to fraction form
   207,510.72/286,365.96 = 118,086.72/x
3. Step 3: Cross multiply
   207,510.72x = 286,365.96 × 118,086.72
4. Step 4: Simplify right side
   207,510.72x = 33,816,016,936.05
5. Step 5: Solve for x
   x = 33,816,016,936.05/207,510.72
6. Step 6: Final answer
   x = 162,960.34