Finding the Fourth Proportional to 111,843.10, 156,787.70 and 111,843.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,843.10 : 156,787.70 = 111,843.10 : x
2. Step 2: Convert to fraction form
   111,843.10/156,787.70 = 111,843.10/x
3. Step 3: Cross multiply
   111,843.10x = 156,787.70 × 111,843.10
4. Step 4: Simplify right side
   111,843.10x = 17,535,622,409.87
5. Step 5: Solve for x
   x = 17,535,622,409.87/111,843.10
6. Step 6: Final answer
   x = 156,787.70