Finding the Fourth Proportional to 91,667.28, 126,494.76 and 51,380.64

Step by Step Solution

1. Step 1: Write the proportion equation
   91,667.28 : 126,494.76 = 51,380.64 : x
2. Step 2: Convert to fraction form
   91,667.28/126,494.76 = 51,380.64/x
3. Step 3: Cross multiply
   91,667.28x = 126,494.76 × 51,380.64
4. Step 4: Simplify right side
   91,667.28x = 6,499,381,725.45
5. Step 5: Solve for x
   x = 6,499,381,725.45/91,667.28
6. Step 6: Final answer
   x = 70,901.87