Finding the Fourth Proportional to 99,567.72, 149,196.06 and 84,715.56

Step by Step Solution

1. Step 1: Write the proportion equation
   99,567.72 : 149,196.06 = 84,715.56 : x
2. Step 2: Convert to fraction form
   99,567.72/149,196.06 = 84,715.56/x
3. Step 3: Cross multiply
   99,567.72x = 149,196.06 × 84,715.56
4. Step 4: Simplify right side
   99,567.72x = 12,639,227,772.69
5. Step 5: Solve for x
   x = 12,639,227,772.69/99,567.72
6. Step 6: Final answer
   x = 126,941.02