Finding the Fourth Proportional to 64,612.20, 89,151.76 and 37,749.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,612.20 : 89,151.76 = 37,749.50 : x
2. Step 2: Convert to fraction form
   64,612.20/89,151.76 = 37,749.50/x
3. Step 3: Cross multiply
   64,612.20x = 89,151.76 × 37,749.50
4. Step 4: Simplify right side
   64,612.20x = 3,365,434,364.12
5. Step 5: Solve for x
   x = 3,365,434,364.12/64,612.20
6. Step 6: Final answer
   x = 52,086.67