Finding the Fourth Proportional to 118,648.81, 163,733.17 and 64,932.75

Step by Step Solution

1. Step 1: Write the proportion equation
   118,648.81 : 163,733.17 = 64,932.75 : x
2. Step 2: Convert to fraction form
   118,648.81/163,733.17 = 64,932.75/x
3. Step 3: Cross multiply
   118,648.81x = 163,733.17 × 64,932.75
4. Step 4: Simplify right side
   118,648.81x = 10,631,644,013.32
5. Step 5: Solve for x
   x = 10,631,644,013.32/118,648.81
6. Step 6: Final answer
   x = 89,605.99