Finding the Fourth Proportional to 118,573.32, 163,627.78 and 64,857.14

Step by Step Solution

1. Step 1: Write the proportion equation
   118,573.32 : 163,627.78 = 64,857.14 : x
2. Step 2: Convert to fraction form
   118,573.32/163,627.78 = 64,857.14/x
3. Step 3: Cross multiply
   118,573.32x = 163,627.78 × 64,857.14
4. Step 4: Simplify right side
   118,573.32x = 10,612,429,835.35
5. Step 5: Solve for x
   x = 10,612,429,835.35/118,573.32
6. Step 6: Final answer
   x = 89,500.99