Finding the Fourth Proportional to 81,432.27, 112,378.73 and 45,621.50

Step by Step Solution

1. Step 1: Write the proportion equation
   81,432.27 : 112,378.73 = 45,621.50 : x
2. Step 2: Convert to fraction form
   81,432.27/112,378.73 = 45,621.50/x
3. Step 3: Cross multiply
   81,432.27x = 112,378.73 × 45,621.50
4. Step 4: Simplify right side
   81,432.27x = 5,126,885,440.69
5. Step 5: Solve for x
   x = 5,126,885,440.69/81,432.27
6. Step 6: Final answer
   x = 62,958.89