Finding the Fourth Proportional to 112,423.86, 155,140.83 and 64,684.62

Step by Step Solution

1. Step 1: Write the proportion equation
   112,423.86 : 155,140.83 = 64,684.62 : x
2. Step 2: Convert to fraction form
   112,423.86/155,140.83 = 64,684.62/x
3. Step 3: Cross multiply
   112,423.86x = 155,140.83 × 64,684.62
4. Step 4: Simplify right side
   112,423.86x = 10,035,225,635.03
5. Step 5: Solve for x
   x = 10,035,225,635.03/112,423.86
6. Step 6: Final answer
   x = 89,262.42