Finding the Fourth Proportional to 118,317.47, 163,284.72 and 64,607.48

Step by Step Solution

1. Step 1: Write the proportion equation
   118,317.47 : 163,284.72 = 64,607.48 : x
2. Step 2: Convert to fraction form
   118,317.47/163,284.72 = 64,607.48/x
3. Step 3: Cross multiply
   118,317.47x = 163,284.72 × 64,607.48
4. Step 4: Simplify right side
   118,317.47x = 10,549,413,465.28
5. Step 5: Solve for x
   x = 10,549,413,465.28/118,317.47
6. Step 6: Final answer
   x = 89,161.93