Finding the Fourth Proportional to 111,993,854.43, 154,552,179.69 and 64,978,922.10

Step by Step Solution

1. Step 1: Write the proportion equation
   111,993,854.43 : 154,552,179.69 = 64,978,922.10 : x
2. Step 2: Convert to fraction form
   111,993,854.43/154,552,179.69 = 64,978,922.10/x
3. Step 3: Cross multiply
   111,993,854.43x = 154,552,179.69 × 64,978,922.10
4. Step 4: Simplify right side
   111,993,854.43x = 10,042,634,044,461,712
5. Step 5: Solve for x
   x = 10,042,634,044,461,712/111,993,854.43
6. Step 6: Final answer
   x = 89,671,295.77