Finding the Fourth Proportional to 118,259.58, 163,196.96 and 64,544.16

Step by Step Solution

1. Step 1: Write the proportion equation
   118,259.58 : 163,196.96 = 64,544.16 : x
2. Step 2: Convert to fraction form
   118,259.58/163,196.96 = 64,544.16/x
3. Step 3: Cross multiply
   118,259.58x = 163,196.96 × 64,544.16
4. Step 4: Simplify right side
   118,259.58x = 10,533,410,697.75
5. Step 5: Solve for x
   x = 10,533,410,697.75/118,259.58
6. Step 6: Final answer
   x = 89,070.25