Finding the Fourth Proportional to 112,351.50, 155,045.61 and 64,607.67

Step by Step Solution

1. Step 1: Write the proportion equation
   112,351.50 : 155,045.61 = 64,607.67 : x
2. Step 2: Convert to fraction form
   112,351.50/155,045.61 = 64,607.67/x
3. Step 3: Cross multiply
   112,351.50x = 155,045.61 × 64,607.67
4. Step 4: Simplify right side
   112,351.50x = 10,017,135,605.83
5. Step 5: Solve for x
   x = 10,017,135,605.83/112,351.50
6. Step 6: Final answer
   x = 89,158.90