Finding the Fourth Proportional to 105,791.10, 148,501.20 and 105,791.10

Step by Step Solution

1. Step 1: Write the proportion equation
   105,791.10 : 148,501.20 = 105,791.10 : x
2. Step 2: Convert to fraction form
   105,791.10/148,501.20 = 105,791.10/x
3. Step 3: Cross multiply
   105,791.10x = 148,501.20 × 105,791.10
4. Step 4: Simplify right side
   105,791.10x = 15,710,105,299.32
5. Step 5: Solve for x
   x = 15,710,105,299.32/105,791.10
6. Step 6: Final answer
   x = 148,501.20