Finding the Fourth Proportional to 118,670.72, 163,759.24 and 64,945.34

Step by Step Solution

1. Step 1: Write the proportion equation
   118,670.72 : 163,759.24 = 64,945.34 : x
2. Step 2: Convert to fraction form
   118,670.72/163,759.24 = 64,945.34/x
3. Step 3: Cross multiply
   118,670.72x = 163,759.24 × 64,945.34
4. Step 4: Simplify right side
   118,670.72x = 10,635,399,519.94
5. Step 5: Solve for x
   x = 10,635,399,519.94/118,670.72
6. Step 6: Final answer
   x = 89,621.09