Finding the Fourth Proportional to 118,549.30, 163,595.74 and 64,834.15

Step by Step Solution

1. Step 1: Write the proportion equation
   118,549.30 : 163,595.74 = 64,834.15 : x
2. Step 2: Convert to fraction form
   118,549.30/163,595.74 = 64,834.15/x
3. Step 3: Cross multiply
   118,549.30x = 163,595.74 × 64,834.15
4. Step 4: Simplify right side
   118,549.30x = 10,606,589,766.46
5. Step 5: Solve for x
   x = 10,606,589,766.46/118,549.30
6. Step 6: Final answer
   x = 89,469.87