Finding the Fourth Proportional to 111,975.10, 156,972.50 and 111,975.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,975.10 : 156,972.50 = 111,975.10 : x
2. Step 2: Convert to fraction form
   111,975.10/156,972.50 = 111,975.10/x
3. Step 3: Cross multiply
   111,975.10x = 156,972.50 × 111,975.10
4. Step 4: Simplify right side
   111,975.10x = 17,577,011,384.75
5. Step 5: Solve for x
   x = 17,577,011,384.75/111,975.10
6. Step 6: Final answer
   x = 156,972.50