Finding the Fourth Proportional to 118,190.76, 163,103.31 and 64,475.88

Step by Step Solution

1. Step 1: Write the proportion equation
   118,190.76 : 163,103.31 = 64,475.88 : x
2. Step 2: Convert to fraction form
   118,190.76/163,103.31 = 64,475.88/x
3. Step 3: Cross multiply
   118,190.76x = 163,103.31 × 64,475.88
4. Step 4: Simplify right side
   118,190.76x = 10,516,229,443.16
5. Step 5: Solve for x
   x = 10,516,229,443.16/118,190.76
6. Step 6: Final answer
   x = 88,976.75