Finding the Fourth Proportional to 118,411.40, 163,405.82 and 64,695.26

Step by Step Solution

1. Step 1: Write the proportion equation
   118,411.40 : 163,405.82 = 64,695.26 : x
2. Step 2: Convert to fraction form
   118,411.40/163,405.82 = 64,695.26/x
3. Step 3: Cross multiply
   118,411.40x = 163,405.82 × 64,695.26
4. Step 4: Simplify right side
   118,411.40x = 10,571,582,010.41
5. Step 5: Solve for x
   x = 10,571,582,010.41/118,411.40
6. Step 6: Final answer
   x = 89,278.41