Finding the Fourth Proportional to 60,892.28, 91,211.86 and 31,220.28

Step by Step Solution

1. Step 1: Write the proportion equation
   60,892.28 : 91,211.86 = 31,220.28 : x
2. Step 2: Convert to fraction form
   60,892.28/91,211.86 = 31,220.28/x
3. Step 3: Cross multiply
   60,892.28x = 91,211.86 × 31,220.28
4. Step 4: Simplify right side
   60,892.28x = 2,847,659,808.52
5. Step 5: Solve for x
   x = 2,847,659,808.52/60,892.28
6. Step 6: Final answer
   x = 46,765.53