Finding the Fourth Proportional to 111,431.60, 167,295.72 and 64,718

Step by Step Solution

1. Step 1: Write the proportion equation
   111,431.60 : 167,295.72 = 64,718 : x
2. Step 2: Convert to fraction form
   111,431.60/167,295.72 = 64,718/x
3. Step 3: Cross multiply
   111,431.60x = 167,295.72 × 64,718
4. Step 4: Simplify right side
   111,431.60x = 10,827,044,406.96
5. Step 5: Solve for x
   x = 10,827,044,406.96/111,431.60
6. Step 6: Final answer
   x = 97,163.14