Finding the Fourth Proportional to 91,065, 125,749.01 and 57,131.82

Step by Step Solution

1. Step 1: Write the proportion equation
   91,065 : 125,749.01 = 57,131.82 : x
2. Step 2: Convert to fraction form
   91,065/125,749.01 = 57,131.82/x
3. Step 3: Cross multiply
   91,065x = 125,749.01 × 57,131.82
4. Step 4: Simplify right side
   91,065x = 7,184,269,518.84
5. Step 5: Solve for x
   x = 7,184,269,518.84/91,065
6. Step 6: Final answer
   x = 78,891.67