Finding the Fourth Proportional to 118,671.41, 163,766.72 and 64,959.82

Step by Step Solution

1. Step 1: Write the proportion equation
   118,671.41 : 163,766.72 = 64,959.82 : x
2. Step 2: Convert to fraction form
   118,671.41/163,766.72 = 64,959.82/x
3. Step 3: Cross multiply
   118,671.41x = 163,766.72 × 64,959.82
4. Step 4: Simplify right side
   118,671.41x = 10,638,256,406.17
5. Step 5: Solve for x
   x = 10,638,256,406.17/118,671.41
6. Step 6: Final answer
   x = 89,644.64