Finding the Fourth Proportional to 64,105.37, 88,563.60 and 51,213

Step by Step Solution

1. Step 1: Write the proportion equation
   64,105.37 : 88,563.60 = 51,213 : x
2. Step 2: Convert to fraction form
   64,105.37/88,563.60 = 51,213/x
3. Step 3: Cross multiply
   64,105.37x = 88,563.60 × 51,213
4. Step 4: Simplify right side
   64,105.37x = 4,535,607,646.80
5. Step 5: Solve for x
   x = 4,535,607,646.80/64,105.37
6. Step 6: Final answer
   x = 70,752.39