Finding the Fourth Proportional to 91,145,665.10, 125,769,879.88 and 72,608,011.58

Step by Step Solution

1. Step 1: Write the proportion equation
   91,145,665.10 : 125,769,879.88 = 72,608,011.58 : x
2. Step 2: Convert to fraction form
   91,145,665.10/125,769,879.88 = 72,608,011.58/x
3. Step 3: Cross multiply
   91,145,665.10x = 125,769,879.88 × 72,608,011.58
4. Step 4: Simplify right side
   91,145,665.10x = 9,131,900,893,931,880
5. Step 5: Solve for x
   x = 9,131,900,893,931,880/91,145,665.10
6. Step 6: Final answer
   x = 100,190,183.31