Finding the Fourth Proportional to 309,464,854.56, 464,200,518.24 and 91,119,330.72

Step by Step Solution

1. Step 1: Write the proportion equation
   309,464,854.56 : 464,200,518.24 = 91,119,330.72 : x
2. Step 2: Convert to fraction form
   309,464,854.56/464,200,518.24 = 91,119,330.72/x
3. Step 3: Cross multiply
   309,464,854.56x = 464,200,518.24 × 91,119,330.72
4. Step 4: Simplify right side
   309,464,854.56x = 42,297,640,541,905,952
5. Step 5: Solve for x
   x = 42,297,640,541,905,952/309,464,854.56
6. Step 6: Final answer
   x = 136,679,949.01