Finding the Fourth Proportional to 111,972.10, 156,968.30 and 111,972.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,972.10 : 156,968.30 = 111,972.10 : x
2. Step 2: Convert to fraction form
   111,972.10/156,968.30 = 111,972.10/x
3. Step 3: Cross multiply
   111,972.10x = 156,968.30 × 111,972.10
4. Step 4: Simplify right side
   111,972.10x = 17,576,070,184.43
5. Step 5: Solve for x
   x = 17,576,070,184.43/111,972.10
6. Step 6: Final answer
   x = 156,968.30