Finding the Fourth Proportional to 118,819.91, 163,971.47 and 65,106.96

Step by Step Solution

1. Step 1: Write the proportion equation
   118,819.91 : 163,971.47 = 65,106.96 : x
2. Step 2: Convert to fraction form
   118,819.91/163,971.47 = 65,106.96/x
3. Step 3: Cross multiply
   118,819.91x = 163,971.47 × 65,106.96
4. Step 4: Simplify right side
   118,819.91x = 10,675,683,938.43
5. Step 5: Solve for x
   x = 10,675,683,938.43/118,819.91
6. Step 6: Final answer
   x = 89,847.61