Finding the Fourth Proportional to 117,945.06, 162,761.85 and 64,230.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,945.06 : 162,761.85 = 64,230.72 : x
2. Step 2: Convert to fraction form
   117,945.06/162,761.85 = 64,230.72/x
3. Step 3: Cross multiply
   117,945.06x = 162,761.85 × 64,230.72
4. Step 4: Simplify right side
   117,945.06x = 10,454,310,814.03
5. Step 5: Solve for x
   x = 10,454,310,814.03/117,945.06
6. Step 6: Final answer
   x = 88,637.12