Finding the Fourth Proportional to 118,109.85, 162,992.33 and 64,395.76

Step by Step Solution

1. Step 1: Write the proportion equation
   118,109.85 : 162,992.33 = 64,395.76 : x
2. Step 2: Convert to fraction form
   118,109.85/162,992.33 = 64,395.76/x
3. Step 3: Cross multiply
   118,109.85x = 162,992.33 × 64,395.76
4. Step 4: Simplify right side
   118,109.85x = 10,496,014,601.04
5. Step 5: Solve for x
   x = 10,496,014,601.04/118,109.85
6. Step 6: Final answer
   x = 88,866.55