Finding the Fourth Proportional to 72,229,987.20, 108,278,714.72 and 31,263,628.16

Step by Step Solution

1. Step 1: Write the proportion equation
   72,229,987.20 : 108,278,714.72 = 31,263,628.16 : x
2. Step 2: Convert to fraction form
   72,229,987.20/108,278,714.72 = 31,263,628.16/x
3. Step 3: Cross multiply
   72,229,987.20x = 108,278,714.72 × 31,263,628.16
4. Step 4: Simplify right side
   72,229,987.20x = 3,385,185,474,648,798.50
5. Step 5: Solve for x
   x = 3,385,185,474,648,798.50/72,229,987.20
6. Step 6: Final answer
   x = 46,866,760.00