Finding the Fourth Proportional to 64,775.60, 89,390.59 and 37,912.86

Step by Step Solution

1. Step 1: Write the proportion equation
   64,775.60 : 89,390.59 = 37,912.86 : x
2. Step 2: Convert to fraction form
   64,775.60/89,390.59 = 37,912.86/x
3. Step 3: Cross multiply
   64,775.60x = 89,390.59 × 37,912.86
4. Step 4: Simplify right side
   64,775.60x = 3,389,052,829.21
5. Step 5: Solve for x
   x = 3,389,052,829.21/64,775.60
6. Step 6: Final answer
   x = 52,319.90