Finding the Fourth Proportional to 118,410.69, 163,404.84 and 64,694.55

Step by Step Solution

1. Step 1: Write the proportion equation
   118,410.69 : 163,404.84 = 64,694.55 : x
2. Step 2: Convert to fraction form
   118,410.69/163,404.84 = 64,694.55/x
3. Step 3: Cross multiply
   118,410.69x = 163,404.84 × 64,694.55
4. Step 4: Simplify right side
   118,410.69x = 10,571,403,161.87
5. Step 5: Solve for x
   x = 10,571,403,161.87/118,410.69
6. Step 6: Final answer
   x = 89,277.44