Finding the Fourth Proportional to 117,892.60, 162,686.81 and 64,176.50

Step by Step Solution

1. Step 1: Write the proportion equation
   117,892.60 : 162,686.81 = 64,176.50 : x
2. Step 2: Convert to fraction form
   117,892.60/162,686.81 = 64,176.50/x
3. Step 3: Cross multiply
   117,892.60x = 162,686.81 × 64,176.50
4. Step 4: Simplify right side
   117,892.60x = 10,440,670,061.97
5. Step 5: Solve for x
   x = 10,440,670,061.97/117,892.60
6. Step 6: Final answer
   x = 88,560.86