Finding the Fourth Proportional to 91,100.89, 125,719.40 and 50,817.25

Step by Step Solution

1. Step 1: Write the proportion equation
   91,100.89 : 125,719.40 = 50,817.25 : x
2. Step 2: Convert to fraction form
   91,100.89/125,719.40 = 50,817.25/x
3. Step 3: Cross multiply
   91,100.89x = 125,719.40 × 50,817.25
4. Step 4: Simplify right side
   91,100.89x = 6,388,714,179.65
5. Step 5: Solve for x
   x = 6,388,714,179.65/91,100.89
6. Step 6: Final answer
   x = 70,127.90