Finding the Fourth Proportional to 91,091,498.48, 125,575,522.84 and 64,940,615.56

Step by Step Solution

1. Step 1: Write the proportion equation
   91,091,498.48 : 125,575,522.84 = 64,940,615.56 : x
2. Step 2: Convert to fraction form
   91,091,498.48/125,575,522.84 = 64,940,615.56/x
3. Step 3: Cross multiply
   91,091,498.48x = 125,575,522.84 × 64,940,615.56
4. Step 4: Simplify right side
   91,091,498.48x = 8,154,951,752,498,440
5. Step 5: Solve for x
   x = 8,154,951,752,498,440/91,091,498.48
6. Step 6: Final answer
   x = 89,524,839.18