Finding the Fourth Proportional to 111,939.10, 156,922.10 and 111,939.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,939.10 : 156,922.10 = 111,939.10 : x
2. Step 2: Convert to fraction form
   111,939.10/156,922.10 = 111,939.10/x
3. Step 3: Cross multiply
   111,939.10x = 156,922.10 × 111,939.10
4. Step 4: Simplify right side
   111,939.10x = 17,565,718,644.11
5. Step 5: Solve for x
   x = 17,565,718,644.11/111,939.10
6. Step 6: Final answer
   x = 156,922.10