Finding the Fourth Proportional to 118,168.74, 163,074.80 and 64,453.76

Step by Step Solution

1. Step 1: Write the proportion equation
   118,168.74 : 163,074.80 = 64,453.76 : x
2. Step 2: Convert to fraction form
   118,168.74/163,074.80 = 64,453.76/x
3. Step 3: Cross multiply
   118,168.74x = 163,074.80 × 64,453.76
4. Step 4: Simplify right side
   118,168.74x = 10,510,784,021.25
5. Step 5: Solve for x
   x = 10,510,784,021.25/118,168.74
6. Step 6: Final answer
   x = 88,947.25