Finding the Fourth Proportional to 154,102.50, 212,661.46 and 83,446.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,102.50 : 212,661.46 = 83,446.50 : x
2. Step 2: Convert to fraction form
   154,102.50/212,661.46 = 83,446.50/x
3. Step 3: Cross multiply
   154,102.50x = 212,661.46 × 83,446.50
4. Step 4: Simplify right side
   154,102.50x = 17,745,854,521.89
5. Step 5: Solve for x
   x = 17,745,854,521.89/154,102.50
6. Step 6: Final answer
   x = 115,156.18