Finding the Fourth Proportional to 117,947.16, 162,764.82 and 64,231.56

Step by Step Solution

1. Step 1: Write the proportion equation
   117,947.16 : 162,764.82 = 64,231.56 : x
2. Step 2: Convert to fraction form
   117,947.16/162,764.82 = 64,231.56/x
3. Step 3: Cross multiply
   117,947.16x = 162,764.82 × 64,231.56
4. Step 4: Simplify right side
   117,947.16x = 10,454,638,301.72
5. Step 5: Solve for x
   x = 10,454,638,301.72/117,947.16
6. Step 6: Final answer
   x = 88,638.32