Finding the Fourth Proportional to 117,454.30, 162,087.38 and 63,739.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,454.30 : 162,087.38 = 63,739.31 : x
2. Step 2: Convert to fraction form
   117,454.30/162,087.38 = 63,739.31/x
3. Step 3: Cross multiply
   117,454.30x = 162,087.38 × 63,739.31
4. Step 4: Simplify right side
   117,454.30x = 10,331,336,870.80
5. Step 5: Solve for x
   x = 10,331,336,870.80/117,454.30
6. Step 6: Final answer
   x = 87,960.48