Finding the Fourth Proportional to 118,086.69, 162,951.48 and 66,411.53

Step by Step Solution

1. Step 1: Write the proportion equation
   118,086.69 : 162,951.48 = 66,411.53 : x
2. Step 2: Convert to fraction form
   118,086.69/162,951.48 = 66,411.53/x
3. Step 3: Cross multiply
   118,086.69x = 162,951.48 × 66,411.53
4. Step 4: Simplify right side
   118,086.69x = 10,821,856,287.81
5. Step 5: Solve for x
   x = 10,821,856,287.81/118,086.69
6. Step 6: Final answer
   x = 91,643.32