Finding the Fourth Proportional to 113,152.75, 156,169.72 and 64,756.67

Step by Step Solution

1. Step 1: Write the proportion equation
   113,152.75 : 156,169.72 = 64,756.67 : x
2. Step 2: Convert to fraction form
   113,152.75/156,169.72 = 64,756.67/x
3. Step 3: Cross multiply
   113,152.75x = 156,169.72 × 64,756.67
4. Step 4: Simplify right side
   113,152.75x = 10,113,030,322.13
5. Step 5: Solve for x
   x = 10,113,030,322.13/113,152.75
6. Step 6: Final answer
   x = 89,375.03