Finding the Fourth Proportional to 64,719.50, 89,295.45 and 37,868.60

Step by Step Solution

1. Step 1: Write the proportion equation
   64,719.50 : 89,295.45 = 37,868.60 : x
2. Step 2: Convert to fraction form
   64,719.50/89,295.45 = 37,868.60/x
3. Step 3: Cross multiply
   64,719.50x = 89,295.45 × 37,868.60
4. Step 4: Simplify right side
   64,719.50x = 3,381,493,231.39
5. Step 5: Solve for x
   x = 3,381,493,231.39/64,719.50
6. Step 6: Final answer
   x = 52,248.45