Finding the Fourth Proportional to 91,100.59, 125,719.00 and 50,813.31

Step by Step Solution

1. Step 1: Write the proportion equation
   91,100.59 : 125,719.00 = 50,813.31 : x
2. Step 2: Convert to fraction form
   91,100.59/125,719.00 = 50,813.31/x
3. Step 3: Cross multiply
   91,100.59x = 125,719.00 × 50,813.31
4. Step 4: Simplify right side
   91,100.59x = 6,388,198,961.22
5. Step 5: Solve for x
   x = 6,388,198,961.22/91,100.59
6. Step 6: Final answer
   x = 70,122.48