Finding the Fourth Proportional to 112,911.86, 155,807.12 and 65,180.58

Step by Step Solution

1. Step 1: Write the proportion equation
   112,911.86 : 155,807.12 = 65,180.58 : x
2. Step 2: Convert to fraction form
   112,911.86/155,807.12 = 65,180.58/x
3. Step 3: Cross multiply
   112,911.86x = 155,807.12 × 65,180.58
4. Step 4: Simplify right side
   112,911.86x = 10,155,598,449.73
5. Step 5: Solve for x
   x = 10,155,598,449.73/112,911.86
6. Step 6: Final answer
   x = 89,942.71