Finding the Fourth Proportional to 118,414.89, 163,407.69 and 64,701.75

Step by Step Solution

1. Step 1: Write the proportion equation
   118,414.89 : 163,407.69 = 64,701.75 : x
2. Step 2: Convert to fraction form
   118,414.89/163,407.69 = 64,701.75/x
3. Step 3: Cross multiply
   118,414.89x = 163,407.69 × 64,701.75
4. Step 4: Simplify right side
   118,414.89x = 10,572,763,506.46
5. Step 5: Solve for x
   x = 10,572,763,506.46/118,414.89
6. Step 6: Final answer
   x = 89,285.76