Finding the Fourth Proportional to 14,145,131.67, 19,523,719.53 and 8,643,139.62

Step by Step Solution

1. Step 1: Write the proportion equation
   14,145,131.67 : 19,523,719.53 = 8,643,139.62 : x
2. Step 2: Convert to fraction form
   14,145,131.67/19,523,719.53 = 8,643,139.62/x
3. Step 3: Cross multiply
   14,145,131.67x = 19,523,719.53 × 8,643,139.62
4. Step 4: Simplify right side
   14,145,131.67x = 168,746,233,799,510.78
5. Step 5: Solve for x
   x = 168,746,233,799,510.78/14,145,131.67
6. Step 6: Final answer
   x = 11,929,633.30