Finding the Fourth Proportional to 117,900.83, 162,698.09 and 64,186.09

Step by Step Solution

1. Step 1: Write the proportion equation
   117,900.83 : 162,698.09 = 64,186.09 : x
2. Step 2: Convert to fraction form
   117,900.83/162,698.09 = 64,186.09/x
3. Step 3: Cross multiply
   117,900.83x = 162,698.09 × 64,186.09
4. Step 4: Simplify right side
   117,900.83x = 10,442,953,519.89
5. Step 5: Solve for x
   x = 10,442,953,519.89/117,900.83
6. Step 6: Final answer
   x = 88,574.04