Finding the Fourth Proportional to 117,697.86, 162,495.72 and 80,966.79

Step by Step Solution

1. Step 1: Write the proportion equation
   117,697.86 : 162,495.72 = 80,966.79 : x
2. Step 2: Convert to fraction form
   117,697.86/162,495.72 = 80,966.79/x
3. Step 3: Cross multiply
   117,697.86x = 162,495.72 × 80,966.79
4. Step 4: Simplify right side
   117,697.86x = 13,156,756,837.14
5. Step 5: Solve for x
   x = 13,156,756,837.14/117,697.86
6. Step 6: Final answer
   x = 111,784.16