Finding the Fourth Proportional to 216,647,300.94, 298,894,814.91 and 142,347,878.70

Step by Step Solution

1. Step 1: Write the proportion equation
   216,647,300.94 : 298,894,814.91 = 142,347,878.70 : x
2. Step 2: Convert to fraction form
   216,647,300.94/298,894,814.91 = 142,347,878.70/x
3. Step 3: Cross multiply
   216,647,300.94x = 298,894,814.91 × 142,347,878.70
4. Step 4: Simplify right side
   216,647,300.94x = 42,547,042,856,867,632
5. Step 5: Solve for x
   x = 42,547,042,856,867,632/216,647,300.94
6. Step 6: Final answer
   x = 196,388,520.29