Finding the Fourth Proportional to 118,045.92, 162,898.60 and 64,329.78

Step by Step Solution

1. Step 1: Write the proportion equation
   118,045.92 : 162,898.60 = 64,329.78 : x
2. Step 2: Convert to fraction form
   118,045.92/162,898.60 = 64,329.78/x
3. Step 3: Cross multiply
   118,045.92x = 162,898.60 × 64,329.78
4. Step 4: Simplify right side
   118,045.92x = 10,479,231,100.31
5. Step 5: Solve for x
   x = 10,479,231,100.31/118,045.92
6. Step 6: Final answer
   x = 88,772.50