Finding the Fourth Proportional to 111,456.79, 153,810.38 and 63,711.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,456.79 : 153,810.38 = 63,711.18 : x
2. Step 2: Convert to fraction form
   111,456.79/153,810.38 = 63,711.18/x
3. Step 3: Cross multiply
   111,456.79x = 153,810.38 × 63,711.18
4. Step 4: Simplify right side
   111,456.79x = 9,799,440,806.05
5. Step 5: Solve for x
   x = 9,799,440,806.05/111,456.79
6. Step 6: Final answer
   x = 87,921.43