Finding the Fourth Proportional to 117,818.15, 162,590.72 and 64,103.21

Step by Step Solution

1. Step 1: Write the proportion equation
   117,818.15 : 162,590.72 = 64,103.21 : x
2. Step 2: Convert to fraction form
   117,818.15/162,590.72 = 64,103.21/x
3. Step 3: Cross multiply
   117,818.15x = 162,590.72 × 64,103.21
4. Step 4: Simplify right side
   117,818.15x = 10,422,587,068.21
5. Step 5: Solve for x
   x = 10,422,587,068.21/117,818.15
6. Step 6: Final answer
   x = 88,463.34