Finding the Fourth Proportional to 82,086,669.12, 113,252,097.60 and 47,278,662.72

Step by Step Solution

1. Step 1: Write the proportion equation
   82,086,669.12 : 113,252,097.60 = 47,278,662.72 : x
2. Step 2: Convert to fraction form
   82,086,669.12/113,252,097.60 = 47,278,662.72/x
3. Step 3: Cross multiply
   82,086,669.12x = 113,252,097.60 × 47,278,662.72
4. Step 4: Simplify right side
   82,086,669.12x = 5,354,407,724,762,921
5. Step 5: Solve for x
   x = 5,354,407,724,762,921/82,086,669.12
6. Step 6: Final answer
   x = 65,228,712.31