Finding the Fourth Proportional to 142,569,287.61, 196,711,895.76 and 80,689,624.35

Step by Step Solution

1. Step 1: Write the proportion equation
   142,569,287.61 : 196,711,895.76 = 80,689,624.35 : x
2. Step 2: Convert to fraction form
   142,569,287.61/196,711,895.76 = 80,689,624.35/x
3. Step 3: Cross multiply
   142,569,287.61x = 196,711,895.76 × 80,689,624.35
4. Step 4: Simplify right side
   142,569,287.61x = 15,872,608,974,050,756
5. Step 5: Solve for x
   x = 15,872,608,974,050,756/142,569,287.61
6. Step 6: Final answer
   x = 111,332,596.52