Finding the Fourth Proportional to 86,985,942.69, 120,037,372.56 and 47,825,389.47

Step by Step Solution

1. Step 1: Write the proportion equation
   86,985,942.69 : 120,037,372.56 = 47,825,389.47 : x
2. Step 2: Convert to fraction form
   86,985,942.69/120,037,372.56 = 47,825,389.47/x
3. Step 3: Cross multiply
   86,985,942.69x = 120,037,372.56 × 47,825,389.47
4. Step 4: Simplify right side
   86,985,942.69x = 5,740,834,093,637,491
5. Step 5: Solve for x
   x = 5,740,834,093,637,491/86,985,942.69
6. Step 6: Final answer
   x = 65,997,262.50