Finding the Fourth Proportional to 118,234.18, 163,161.83 and 64,520.11

Step by Step Solution

1. Step 1: Write the proportion equation
   118,234.18 : 163,161.83 = 64,520.11 : x
2. Step 2: Convert to fraction form
   118,234.18/163,161.83 = 64,520.11/x
3. Step 3: Cross multiply
   118,234.18x = 163,161.83 × 64,520.11
4. Step 4: Simplify right side
   118,234.18x = 10,527,219,221.73
5. Step 5: Solve for x
   x = 10,527,219,221.73/118,234.18
6. Step 6: Final answer
   x = 89,037.02