Finding the Fourth Proportional to 108,172,151.87, 149,329,044.06 and 72,470,067.53

Step by Step Solution

1. Step 1: Write the proportion equation
   108,172,151.87 : 149,329,044.06 = 72,470,067.53 : x
2. Step 2: Convert to fraction form
   108,172,151.87/149,329,044.06 = 72,470,067.53/x
3. Step 3: Cross multiply
   108,172,151.87x = 149,329,044.06 × 72,470,067.53
4. Step 4: Simplify right side
   108,172,151.87x = 10,821,885,907,218,546
5. Step 5: Solve for x
   x = 10,821,885,907,218,546/108,172,151.87
6. Step 6: Final answer
   x = 100,043,178.58