Finding the Fourth Proportional to 91,115.69, 125,818.72 and 57,182.96

Step by Step Solution

1. Step 1: Write the proportion equation
   91,115.69 : 125,818.72 = 57,182.96 : x
2. Step 2: Convert to fraction form
   91,115.69/125,818.72 = 57,182.96/x
3. Step 3: Cross multiply
   91,115.69x = 125,818.72 × 57,182.96
4. Step 4: Simplify right side
   91,115.69x = 7,194,687,004.60
5. Step 5: Solve for x
   x = 7,194,687,004.60/91,115.69
6. Step 6: Final answer
   x = 78,962.11