Finding the Fourth Proportional to 118,380.32, 163,363.86 and 64,665.36

Step by Step Solution

1. Step 1: Write the proportion equation
   118,380.32 : 163,363.86 = 64,665.36 : x
2. Step 2: Convert to fraction form
   118,380.32/163,363.86 = 64,665.36/x
3. Step 3: Cross multiply
   118,380.32x = 163,363.86 × 64,665.36
4. Step 4: Simplify right side
   118,380.32x = 10,563,982,817.89
5. Step 5: Solve for x
   x = 10,563,982,817.89/118,380.32
6. Step 6: Final answer
   x = 89,237.66