Finding the Fourth Proportional to 91,196.72, 125,798.86 and 54,873

Step by Step Solution

1. Step 1: Write the proportion equation
   91,196.72 : 125,798.86 = 54,873 : x
2. Step 2: Convert to fraction form
   91,196.72/125,798.86 = 54,873/x
3. Step 3: Cross multiply
   91,196.72x = 125,798.86 × 54,873
4. Step 4: Simplify right side
   91,196.72x = 6,902,960,844.78
5. Step 5: Solve for x
   x = 6,902,960,844.78/91,196.72
6. Step 6: Final answer
   x = 75,693.08