Finding the Fourth Proportional to 118,150.11, 163,048.50 and 64,434.60

Step by Step Solution

1. Step 1: Write the proportion equation
   118,150.11 : 163,048.50 = 64,434.60 : x
2. Step 2: Convert to fraction form
   118,150.11/163,048.50 = 64,434.60/x
3. Step 3: Cross multiply
   118,150.11x = 163,048.50 × 64,434.60
4. Step 4: Simplify right side
   118,150.11x = 10,505,964,878.10
5. Step 5: Solve for x
   x = 10,505,964,878.10/118,150.11
6. Step 6: Final answer
   x = 88,920.48