Finding the Fourth Proportional to 118,633.46, 163,714.17 and 64,918.49

Step by Step Solution

1. Step 1: Write the proportion equation
   118,633.46 : 163,714.17 = 64,918.49 : x
2. Step 2: Convert to fraction form
   118,633.46/163,714.17 = 64,918.49/x
3. Step 3: Cross multiply
   118,633.46x = 163,714.17 × 64,918.49
4. Step 4: Simplify right side
   118,633.46x = 10,628,075,889.43
5. Step 5: Solve for x
   x = 10,628,075,889.43/118,633.46
6. Step 6: Final answer
   x = 89,587.50