Finding the Fourth Proportional to 154,100.50, 212,658.70 and 83,444.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,100.50 : 212,658.70 = 83,444.50 : x
2. Step 2: Convert to fraction form
   154,100.50/212,658.70 = 83,444.50/x
3. Step 3: Cross multiply
   154,100.50x = 212,658.70 × 83,444.50
4. Step 4: Simplify right side
   154,100.50x = 17,745,198,892.15
5. Step 5: Solve for x
   x = 17,745,198,892.15/154,100.50
6. Step 6: Final answer
   x = 115,153.42