Finding the Fourth Proportional to 9,985,150,289.71, 13,779,514,828.72 and 5,407,450,243.38

Step by Step Solution

1. Step 1: Write the proportion equation
   9,985,150,289.71 : 13,779,514,828.72 = 5,407,450,243.38 : x
2. Step 2: Convert to fraction form
   9,985,150,289.71/13,779,514,828.72 = 5,407,450,243.38/x
3. Step 3: Cross multiply
   9,985,150,289.71x = 13,779,514,828.72 × 5,407,450,243.38
4. Step 4: Simplify right side
   9,985,150,289.71x = 74,512,040,814,225,702,912
5. Step 5: Solve for x
   x = 74,512,040,814,225,702,912/9,985,150,289.71
6. Step 6: Final answer
   x = 7,462,285,358.99