Finding the Fourth Proportional to 99,222.72, 148,678.50 and 84,370.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,222.72 : 148,678.50 = 84,370.56 : x
2. Step 2: Convert to fraction form
   99,222.72/148,678.50 = 84,370.56/x
3. Step 3: Cross multiply
   99,222.72x = 148,678.50 × 84,370.56
4. Step 4: Simplify right side
   99,222.72x = 12,544,088,304.96
5. Step 5: Solve for x
   x = 12,544,088,304.96/99,222.72
6. Step 6: Final answer
   x = 126,423.55