Finding the Fourth Proportional to 111,967.60, 156,962 and 111,967.60

Step by Step Solution

1. Step 1: Write the proportion equation
   111,967.60 : 156,962 = 111,967.60 : x
2. Step 2: Convert to fraction form
   111,967.60/156,962 = 111,967.60/x
3. Step 3: Cross multiply
   111,967.60x = 156,962 × 111,967.60
4. Step 4: Simplify right side
   111,967.60x = 17,574,658,431.20
5. Step 5: Solve for x
   x = 17,574,658,431.20/111,967.60
6. Step 6: Final answer
   x = 156,962