Finding the Fourth Proportional to 118,103.54, 162,981.90 and 64,387.58

Step by Step Solution

1. Step 1: Write the proportion equation
   118,103.54 : 162,981.90 = 64,387.58 : x
2. Step 2: Convert to fraction form
   118,103.54/162,981.90 = 64,387.58/x
3. Step 3: Cross multiply
   118,103.54x = 162,981.90 × 64,387.58
4. Step 4: Simplify right side
   118,103.54x = 10,494,009,309.89
5. Step 5: Solve for x
   x = 10,494,009,309.89/118,103.54
6. Step 6: Final answer
   x = 88,854.32