Finding the Fourth Proportional to 72,396,144.92, 99,812,905.88 and 46,890,185.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,396,144.92 : 99,812,905.88 = 46,890,185.42 : x
2. Step 2: Convert to fraction form
   72,396,144.92/99,812,905.88 = 46,890,185.42/x
3. Step 3: Cross multiply
   72,396,144.92x = 99,812,905.88 × 46,890,185.42
4. Step 4: Simplify right side
   72,396,144.92x = 4,680,245,663,288,693
5. Step 5: Solve for x
   x = 4,680,245,663,288,693/72,396,144.92
6. Step 6: Final answer
   x = 64,647,719.42