Finding the Fourth Proportional to 118,245.25, 163,181.90 and 64,533.71

Step by Step Solution

1. Step 1: Write the proportion equation
   118,245.25 : 163,181.90 = 64,533.71 : x
2. Step 2: Convert to fraction form
   118,245.25/163,181.90 = 64,533.71/x
3. Step 3: Cross multiply
   118,245.25x = 163,181.90 × 64,533.71
4. Step 4: Simplify right side
   118,245.25x = 10,530,733,089.18
5. Step 5: Solve for x
   x = 10,530,733,089.18/118,245.25
6. Step 6: Final answer
   x = 89,058.41