Finding the Fourth Proportional to 111,677.30, 155,998.30 and 111,677.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,677.30 : 155,998.30 = 111,677.30 : x
2. Step 2: Convert to fraction form
   111,677.30/155,998.30 = 111,677.30/x
3. Step 3: Cross multiply
   111,677.30x = 155,998.30 × 111,677.30
4. Step 4: Simplify right side
   111,677.30x = 17,421,468,948.59
5. Step 5: Solve for x
   x = 17,421,468,948.59/111,677.30
6. Step 6: Final answer
   x = 155,998.30