Finding the Fourth Proportional to 117,930.06, 162,741.15 and 64,215.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,930.06 : 162,741.15 = 64,215.72 : x
2. Step 2: Convert to fraction form
   117,930.06/162,741.15 = 64,215.72/x
3. Step 3: Cross multiply
   117,930.06x = 162,741.15 × 64,215.72
4. Step 4: Simplify right side
   117,930.06x = 10,450,540,120.88
5. Step 5: Solve for x
   x = 10,450,540,120.88/117,930.06
6. Step 6: Final answer
   x = 88,616.42