Finding the Fourth Proportional to 118,443.82, 163,452.90 and 64,729.66

Step by Step Solution

1. Step 1: Write the proportion equation
   118,443.82 : 163,452.90 = 64,729.66 : x
2. Step 2: Convert to fraction form
   118,443.82/163,452.90 = 64,729.66/x
3. Step 3: Cross multiply
   118,443.82x = 163,452.90 × 64,729.66
4. Step 4: Simplify right side
   118,443.82x = 10,580,250,643.01
5. Step 5: Solve for x
   x = 10,580,250,643.01/118,443.82
6. Step 6: Final answer
   x = 89,327.16