Finding the Fourth Proportional to 117,743.20, 162,488.69 and 64,031.35

Step by Step Solution

1. Step 1: Write the proportion equation
   117,743.20 : 162,488.69 = 64,031.35 : x
2. Step 2: Convert to fraction form
   117,743.20/162,488.69 = 64,031.35/x
3. Step 3: Cross multiply
   117,743.20x = 162,488.69 × 64,031.35
4. Step 4: Simplify right side
   117,743.20x = 10,404,370,180.43
5. Step 5: Solve for x
   x = 10,404,370,180.43/117,743.20
6. Step 6: Final answer
   x = 88,364.93