Finding the Fourth Proportional to 117,731.36, 162,470.04 and 64,016.96

Step by Step Solution

1. Step 1: Write the proportion equation
   117,731.36 : 162,470.04 = 64,016.96 : x
2. Step 2: Convert to fraction form
   117,731.36/162,470.04 = 64,016.96/x
3. Step 3: Cross multiply
   117,731.36x = 162,470.04 × 64,016.96
4. Step 4: Simplify right side
   117,731.36x = 10,400,838,051.88
5. Step 5: Solve for x
   x = 10,400,838,051.88/117,731.36
6. Step 6: Final answer
   x = 88,343.82