Finding the Fourth Proportional to 117,885.69, 162,685.89 and 64,174.28

Step by Step Solution

1. Step 1: Write the proportion equation
   117,885.69 : 162,685.89 = 64,174.28 : x
2. Step 2: Convert to fraction form
   117,885.69/162,685.89 = 64,174.28/x
3. Step 3: Cross multiply
   117,885.69x = 162,685.89 × 64,174.28
4. Step 4: Simplify right side
   117,885.69x = 10,440,249,043.48
5. Step 5: Solve for x
   x = 10,440,249,043.48/117,885.69
6. Step 6: Final answer
   x = 88,562.48