Finding the Fourth Proportional to 118,629, 163,711.98 and 64,912.86

Step by Step Solution

1. Step 1: Write the proportion equation
   118,629 : 163,711.98 = 64,912.86 : x
2. Step 2: Convert to fraction form
   118,629/163,711.98 = 64,912.86/x
3. Step 3: Cross multiply
   118,629x = 163,711.98 × 64,912.86
4. Step 4: Simplify right side
   118,629x = 10,627,012,838.06
5. Step 5: Solve for x
   x = 10,627,012,838.06/118,629
6. Step 6: Final answer
   x = 89,581.91