Finding the Fourth Proportional to 72,396,145.92, 99,812,907.25 and 46,890,186.42

Step by Step Solution

1. Step 1: Write the proportion equation
   72,396,145.92 : 99,812,907.25 = 46,890,186.42 : x
2. Step 2: Convert to fraction form
   72,396,145.92/99,812,907.25 = 46,890,186.42/x
3. Step 3: Cross multiply
   72,396,145.92x = 99,812,907.25 × 46,890,186.42
4. Step 4: Simplify right side
   72,396,145.92x = 4,680,245,828,074,670
5. Step 5: Solve for x
   x = 4,680,245,828,074,670/72,396,145.92
6. Step 6: Final answer
   x = 64,647,720.80