Finding the Fourth Proportional to 118,240.05, 163,171.71 and 64,526.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,240.05 : 163,171.71 = 64,526.25 : x
2. Step 2: Convert to fraction form
   118,240.05/163,171.71 = 64,526.25/x
3. Step 3: Cross multiply
   118,240.05x = 163,171.71 × 64,526.25
4. Step 4: Simplify right side
   118,240.05x = 10,528,858,552.39
5. Step 5: Solve for x
   x = 10,528,858,552.39/118,240.05
6. Step 6: Final answer
   x = 89,046.47