Finding the Fourth Proportional to 112,894.46, 155,807.80 and 65,146.78

Step by Step Solution

1. Step 1: Write the proportion equation
   112,894.46 : 155,807.80 = 65,146.78 : x
2. Step 2: Convert to fraction form
   112,894.46/155,807.80 = 65,146.78/x
3. Step 3: Cross multiply
   112,894.46x = 155,807.80 × 65,146.78
4. Step 4: Simplify right side
   112,894.46x = 10,150,376,867.23
5. Step 5: Solve for x
   x = 10,150,376,867.23/112,894.46
6. Step 6: Final answer
   x = 89,910.32