Finding the Fourth Proportional to 118,830.69, 163,983.78 and 65,114.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,830.69 : 163,983.78 = 65,114.55 : x
2. Step 2: Convert to fraction form
   118,830.69/163,983.78 = 65,114.55/x
3. Step 3: Cross multiply
   118,830.69x = 163,983.78 × 65,114.55
4. Step 4: Simplify right side
   118,830.69x = 10,677,730,042.00
5. Step 5: Solve for x
   x = 10,677,730,042.00/118,830.69
6. Step 6: Final answer
   x = 89,856.67