Finding the Fourth Proportional to 118,573.38, 163,633.68 and 64,861.92

Step by Step Solution

1. Step 1: Write the proportion equation
   118,573.38 : 163,633.68 = 64,861.92 : x
2. Step 2: Convert to fraction form
   118,573.38/163,633.68 = 64,861.92/x
3. Step 3: Cross multiply
   118,573.38x = 163,633.68 × 64,861.92
4. Step 4: Simplify right side
   118,573.38x = 10,613,594,661.47
5. Step 5: Solve for x
   x = 10,613,594,661.47/118,573.38
6. Step 6: Final answer
   x = 89,510.77