Finding the Fourth Proportional to 99,225.72, 148,683 and 84,373.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,225.72 : 148,683 = 84,373.56 : x
2. Step 2: Convert to fraction form
   99,225.72/148,683 = 84,373.56/x
3. Step 3: Cross multiply
   99,225.72x = 148,683 × 84,373.56
4. Step 4: Simplify right side
   99,225.72x = 12,544,914,021.48
5. Step 5: Solve for x
   x = 12,544,914,021.48/99,225.72
6. Step 6: Final answer
   x = 126,428.05