Finding the Fourth Proportional to 105,185,863.40, 157,778,792.67 and 28,508,890.10

Step by Step Solution

1. Step 1: Write the proportion equation
   105,185,863.40 : 157,778,792.67 = 28,508,890.10 : x
2. Step 2: Convert to fraction form
   105,185,863.40/157,778,792.67 = 28,508,890.10/x
3. Step 3: Cross multiply
   105,185,863.40x = 157,778,792.67 × 28,508,890.10
4. Step 4: Simplify right side
   105,185,863.40x = 4,498,098,260,339,715.50
5. Step 5: Solve for x
   x = 4,498,098,260,339,715.50/105,185,863.40
6. Step 6: Final answer
   x = 42,763,334.49