Finding the Fourth Proportional to 118,649.31, 163,733.86 and 64,933.25

Step by Step Solution

1. Step 1: Write the proportion equation
   118,649.31 : 163,733.86 = 64,933.25 : x
2. Step 2: Convert to fraction form
   118,649.31/163,733.86 = 64,933.25/x
3. Step 3: Cross multiply
   118,649.31x = 163,733.86 × 64,933.25
4. Step 4: Simplify right side
   118,649.31x = 10,631,770,521.51
5. Step 5: Solve for x
   x = 10,631,770,521.51/118,649.31
6. Step 6: Final answer
   x = 89,606.68