Finding the Fourth Proportional to 113,277.21, 156,305.41 and 64,871.61

Step by Step Solution

1. Step 1: Write the proportion equation
   113,277.21 : 156,305.41 = 64,871.61 : x
2. Step 2: Convert to fraction form
   113,277.21/156,305.41 = 64,871.61/x
3. Step 3: Cross multiply
   113,277.21x = 156,305.41 × 64,871.61
4. Step 4: Simplify right side
   113,277.21x = 10,139,783,598.41
5. Step 5: Solve for x
   x = 10,139,783,598.41/113,277.21
6. Step 6: Final answer
   x = 89,513.01