Finding the Fourth Proportional to 118,561.42, 163,612.46 and 64,846.28

Step by Step Solution

1. Step 1: Write the proportion equation
   118,561.42 : 163,612.46 = 64,846.28 : x
2. Step 2: Convert to fraction form
   118,561.42/163,612.46 = 64,846.28/x
3. Step 3: Cross multiply
   118,561.42x = 163,612.46 × 64,846.28
4. Step 4: Simplify right side
   118,561.42x = 10,609,659,392.65
5. Step 5: Solve for x
   x = 10,609,659,392.65/118,561.42
6. Step 6: Final answer
   x = 89,486.61