Finding the Fourth Proportional to 91,105.21, 125,723.72 and 50,817.93

Step by Step Solution

1. Step 1: Write the proportion equation
   91,105.21 : 125,723.72 = 50,817.93 : x
2. Step 2: Convert to fraction form
   91,105.21/125,723.72 = 50,817.93/x
3. Step 3: Cross multiply
   91,105.21x = 125,723.72 × 50,817.93
4. Step 4: Simplify right side
   91,105.21x = 6,389,019,422.15
5. Step 5: Solve for x
   x = 6,389,019,422.15/91,105.21
6. Step 6: Final answer
   x = 70,127.93