Finding the Fourth Proportional to 118,729.50, 163,846.71 and 65,737.50

Step by Step Solution

1. Step 1: Write the proportion equation
   118,729.50 : 163,846.71 = 65,737.50 : x
2. Step 2: Convert to fraction form
   118,729.50/163,846.71 = 65,737.50/x
3. Step 3: Cross multiply
   118,729.50x = 163,846.71 × 65,737.50
4. Step 4: Simplify right side
   118,729.50x = 10,770,873,098.63
5. Step 5: Solve for x
   x = 10,770,873,098.63/118,729.50
6. Step 6: Final answer
   x = 90,717.75