Finding the Fourth Proportional to 117,406.72, 162,021.59 and 63,691.74

Step by Step Solution

1. Step 1: Write the proportion equation
   117,406.72 : 162,021.59 = 63,691.74 : x
2. Step 2: Convert to fraction form
   117,406.72/162,021.59 = 63,691.74/x
3. Step 3: Cross multiply
   117,406.72x = 162,021.59 × 63,691.74
4. Step 4: Simplify right side
   117,406.72x = 10,319,436,984.67
5. Step 5: Solve for x
   x = 10,319,436,984.67/117,406.72
6. Step 6: Final answer
   x = 87,894.77