Finding the Fourth Proportional to 118,441.39, 163,448.73 and 64,726.72

Step by Step Solution

1. Step 1: Write the proportion equation
   118,441.39 : 163,448.73 = 64,726.72 : x
2. Step 2: Convert to fraction form
   118,441.39/163,448.73 = 64,726.72/x
3. Step 3: Cross multiply
   118,441.39x = 163,448.73 × 64,726.72
4. Step 4: Simplify right side
   118,441.39x = 10,579,500,181.07
5. Step 5: Solve for x
   x = 10,579,500,181.07/118,441.39
6. Step 6: Final answer
   x = 89,322.66