Finding the Fourth Proportional to 309,746,288.12, 464,632,253.71 and 91,396,630.29

Step by Step Solution

1. Step 1: Write the proportion equation
   309,746,288.12 : 464,632,253.71 = 91,396,630.29 : x
2. Step 2: Convert to fraction form
   309,746,288.12/464,632,253.71 = 91,396,630.29/x
3. Step 3: Cross multiply
   309,746,288.12x = 464,632,253.71 × 91,396,630.29
4. Step 4: Simplify right side
   309,746,288.12x = 42,465,822,313,142,352
5. Step 5: Solve for x
   x = 42,465,822,313,142,352/309,746,288.12
6. Step 6: Final answer
   x = 137,098,728.68