Finding the Fourth Proportional to 99,127.69, 148,839.15 and 40,078.69

Step by Step Solution

1. Step 1: Write the proportion equation
   99,127.69 : 148,839.15 = 40,078.69 : x
2. Step 2: Convert to fraction form
   99,127.69/148,839.15 = 40,078.69/x
3. Step 3: Cross multiply
   99,127.69x = 148,839.15 × 40,078.69
4. Step 4: Simplify right side
   99,127.69x = 5,965,278,152.71
5. Step 5: Solve for x
   x = 5,965,278,152.71/99,127.69
6. Step 6: Final answer
   x = 60,177.72